description the relay function module is a member of the linx pre-certified oem product line. the modules have been tested for fcc and industry canada compliance and can be quickly customized to meet a specific oem?s labeling requirements. this greatly reduces the time and expense of bringing an rf- based product to market. the relay function modules provide four latched or momentary relay outputs that are capable of switching external ac or dc powered loads of up to 5 amps. the relay modules incorporate a linx lr series receiver and an on-board holtek decoder ic. selectable addressing provides security and allows the creation of 256 distinct transmitter / receiver relationships to avoid unwanted interaction when multiple systems are in use. when paired with a compatible linx oem handheld transmitter or transmitter module, the relay function module serves as a reliable wireless switching device at distances of up to 1,000 feet. 4-position relay function module data guide 1.770" 4.700" 5.775" 3.100" 3.200" applications include ? general remote control ? motor control ? garage / gate openers ? lighting control ? call systems ? home / industrial automation ? wire elimination revised 1/28/08 figure 1: package dimensions wireless made simple ? ? fcc, industry canada pre-tested ? wide operational voltage (5 to16vdc) ? dual power inputs ? long-life relays switch ac or dc ? flange-mount case ? quick-attach heavy-duty device connectors ? 256 unique addresses ? can be cosmetically customized for oem applications features part # description fctn-rly4-315 relay function module - 315mhz fctn-rly4-418 relay function module - 418mhz fctn-rly4-433 relay function module - 433mhz ordering information
page 3 theory of operation the fctn-rly4-*** module combines the popular linx lr series receiver with a decoder ic and four relays that are capable of switching a variety of ac or dc loads. the relay function module is designed to receive a wireless signal transmitted from a compatible linx rf module or pre- certified oem transmitter. when transmitted data is received, the data is presented to the decoder. the decoder detects the logic states of the dip switch address lines, and if they match the address settings of the encoder, the decoder?s outputs are set to replicate the state of the encoder?s data lines. the relay outputs are then latched on or off. if momentary operation is desired, jumper pads j2 through j5 can be bridged. figure 3 displays the location of the pads. each jumper corresponds to a relay as shown. power supply considerations the module should be powered from a dc source that is free of noise and high ripple. the best results are normally obtained using a battery or high quality ac wall adapter capable of providing the supply currents indicated in the electrical specifications section. two supply connection options are provided: black (ground) and red (+) quick-connect terminals or a barrel jack (for a 5.5mm plug, tip 7 to 16vdc, shell ground). only one connection should be used at a time and polarity should be observed. setting the module address the relay function module provides a total of 256 unique addreses to avoid contention with other units or to create unique relationships. address selection is made via eight externally accessible dip switches as shown in the adjacent figure. if the switch is on, the address line is connected to ground, otherwise it is floating. the transmitter?s address must match exactly in order for the units to communicate. application note an-00300 describes in detail how to set the address to match any of the transmitters offered by linx. this application note can be found in the support section of the linx website, www.linxtechnologies.com. figure 3: jumper pad locations jumper pads relay 1 2 3 4 jumper j2 j3 j5 j4 a7 = 1 a6 = 2 a5 = 3 a4 = 4 a3 = 5 a2 = 6 a1 = 7 a0 = 8 off on figure 4: address dip switches page 2 1. characterized, but not tested. 2. for ber of 10 -5 at 1,200bps. notes electrical specifications relay function module features 1. antenna 2. dc power connector (5 to 16vdc) 3. ?quick-connect? alternate dc input 4. switched device connectors 5. address selector dip switches 1 2 5 4 3 figure 2: relay module features parameter designation min. typical max. units notes power supply operating voltage v cc 5.0 ? 16.0 vdc ? supply current i cc 12.0 ? 170.0 ma 1 receiver section receive frequency range f c fctn-rly4-315 ? 315 ? mhz ? fctn-rly4-418 ? 418 ? mhz ? fctn-rly4-433 ? 433.92 ? mhz ? center frequency accuracy ? -50 ? +50 khz ? receiver sensitivity ? -106 -112 -118 dbm 2 relay characteristics arrangement ? spst switched power ? ? ? 150 watts ? ? ? ? 1250 va ? relay switching voltage ? 0.0 ? 30.0 vdc ? ? 0.0 ? 250.0 vac ? switched device current ? 0.6 ? 5.0 a ? operate time ? ? 6.0 ? ms ? release time ? ? 3.0 ? ms ? life expectancy mechanical ? 20 million cycles ? electrical ? 1x10 -5 @ 5a ? 30vdc or 250vac contact dielectric strength ? 750vrms between open (at sea level for 1 minute) ? 3000vrms contact-to-coil environmental operating temperature range ? -40 ? +85 c1 storage temperature range -45 ? +85 c1
antenna orientation since the control signals for the relay function module are sent through the air, the physical orientation of the transmitter and receiver plays a critical role in determining the overall range of the system. the antenna may be tilted and swiveled to adjust for maximum range in your environment. in most cases, orienting the antenna in a vertical position will result in optimum system performance and the greatest range. the placement of the module in the final product will also affect the range and performance of the system. if the module is to be placed inside an enclosure, then the enclosure must be plastic or another non-conductive material. otherwise, a hole must be cut into the enclosure to allow the antenna to stick out as the metal or conductive enclosure will shield the module and it will not be able to receive a valid transmission. in this case, the antenna should stick straight out of the enclosure and should not be bent to rest parallel to the metal. this will detune the antenna and significantly reduce its performance. the module should be placed in a position to have the widest line-of-sight field so that the range may be maximized. typically, the module will be placed on top of the product to accommodate this, especially when used with machinery. remote location of the module?s antenna is not possible as it will invalidate the fcc testing, so the positioning of the module and its antenna is an important consideration in the design of the system. page 5 page 4 switched device attachment the relay function module features heavy-duty quick-connect block terminals for attaching the devices to be switched. to use the terminals, press and hold the button over the entry channel to release the contact. insert the wire and then release the button to allow the internal contact to clamp down on the wire. the terminals accept wire gages from 16 to 26 awg. funnel-shaped entry channels help prevent fraying when using untinned wire. the terminal block is arranged as shown in the figure below. there is no polarity on the relay terminals and they may be used in any order (or left unterminated) without internal damage. do not attempt to switch loads in excess of the limits listed in the electrical specifications section. the module does not provide internal protection for shorted loads. therefore, the designer must provide external protection, such as fusing, if the possibility of shorting exists. interference considerations it is important to remember that the range performance of the modules is heavily dependent on the environment in which they are operated. the effects of interference, multipath, and physical attenuation will vary significantly from location to location. the relay function module is based on the linx lr series rf receiver. these are simple low-cost devices intended for short-range transmissions. they utilize ook am-based modulation. am devices can be affected by external noise, such as that from motors or other sources of broadband rf emissions. interference can also come from sources such as paging towers or amateur radio activity. the designer should carefully test the relay function module in the environment in which it will be used to ensure that its performance is appropriate for the chosen application. contention considerations an unlimited number of relay function modules may be operated in proximity without interference, but only one transmitter at a time can be activated within a reception area. while the transmitted signal consists of encoded digital data, only one carrier of any particular frequency can occupy airspace without contention at any given time. if two transmitters are activated in the same area at the same time, the signals will interfere with each other, so the relay module will not see a valid transmission and will not take any action. relays 1234 gnd 5-16vdc figure 5: relay connection block poor optimum acceptable figure 6: fctn-rly4-*** antenna orientation
page 7 page 6 page 7 instruction to the user this device complies with part 15 of the fcc rules. operation of this device is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. this equipment has been tested and found to comply with the limits for a class b digital device, pursuant to part 15 of the fcc rules. these limits are designed to provide reasonable protection against harmful interference in a residential installation. this equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. however, there is no guarantee that interference will not occur in a particular installation. if this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: reorient or relocate the receiving antenna. increase the separation between the equipment and receiver. connect the equipment into an outlet on a circuit different from that to which the receiver is connected. consult the dealer or an experienced radio/tv technician for help. this equipment has been certified to comply with the limits for a class b computing device, pursuant to fcc rules. in order to maintain compliance with fcc regulations, shielded cables must be used with this equipment. operation with non-approved equipment or unshielded cables is likely to result in interference to radio and tv reception. the user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user?s authority to operate this equipment. compliance requirements the fctn-rly4-*** has been tested by an fcc-approved facility and been found to comply with all applicable fcc and industry canada requirements as of the date of this document. a declaration of conformity (doc) is on file. it is the user?s responsibility to consult the fcc or other testing body to determine if any additional testing may be required on the user?s completed product. in products where no additional testing is required, further labeling of the unit is not needed unless the module will be placed inside another housing. it is, however, necessary to include the following statement in the end product?s instruction manual or insert card. place the above statement in the instruction manual or insert card. labeling requirements in cases where the fctn-rly4-*** module is incorporated inside a product and its standard labeling is not visible, the end product must be labeled as shown below. ? the following label shall be affixed in a conspicuous location to any device previously self-certified under the fcc?s declaration of conformity process, when the product is authorized based on assembly using separately authorized components and the resulting product does not require additional testing: ? when the device is constructed in two or more sections connected by wires and marketed together, the label is required to be affixed only to the main control unit. ? when the device is so small, or for such use that it is not practical to place the statement on the unit itself, the information shown on the label shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. however, the unique fcc logo, device trade name, and model number must be present on the device. ? the label shall not be a stick-on paper label. the label shall be ?permanently affixed? to the device (meaning the label is etched, engraved, stamped, silk- screened, indelibly printed on a permanently attached part of the device, or on a nameplate fastened to the equipment by welding, riveting, or a permanent adhesive). the label must be designed to last the expected lifetime of the equipment in the environment in which the equipment may be operated and may not be readily detachable. assembled from tested components (complete system not tested) trade name model number
page 9 page 8 transmitters the relay function module incorporates a linx lr series receiver paired with a holtek ht658 decoder ic. this means that there are several options available for controlling the module. the first option is to use one of the pre-certified oem transmitters offered by linx. these transmitters come in several packages and can be customized to bear the logo or other artwork required by the customer. the only setup required by the customer is to set the address of the transmitter and the relay module. there are four oem transmitters that can be used with the relay function module: the full size handheld, the compact handheld, the long-range handheld, and the keyfob. the full size handheld uses the same eight address lines used by the relay function module, so they only need to be set the same for proper function. the other three transmitters use all ten address lines offered by the holtek ics while the relay function module uses eight. this means that the last two address lines on the transmitters (a8 and a9) must be left floating (turn off the dip switches on the handhelds, cut traces 8 and 9 on the keyfob). the other address lines can be set to whatever the user desires, as long as the transmitter and the relay function module match. a custom transmitter can also be created with a kh series transmitter or an lc or lr series transmitter paired with a holtek ht640 encoder or microprocessor. because the holtek ics have 10 address lines, the last two lines (a8 and a9) must be left open. the holtek address lines are tri-state, meaning that they have three valid input conditions: high, low, or floating. the relay function module uses only the low and floating states, so the custom transmitter can only use these states as well. the lines that are floating should be left open and have no electrical connection. it should be noted that the keyfob transmitter does not allow full functionality of the relay function module. each of the four relays in the module uses two data lines for a total of eight. the keyfob transmitter offers a maximum of five buttons, so at most, it can control two relays in latched operation and three in momentary operation. application note an-00300 describes in detail how to set the relay function module address to match any of the transmitters offered by linx. this note can be found in the support section of the linx web site, www.linxtechnologies.com. figure 7: pre-certified transmitters re3 off re4 off re4 on re3 on re2 on figure 8: keyfob button / relay relationships online resources ? latest news ? data guides ? application notes ? knowledgebase ? software updates if you have questions regarding any linx product and have internet access, make www.linxtechnologies.com your first stop. our website is organized in an intuitive format to immediately give you the answers you need. day or night, the linx website gives you instant access to the latest information regarding the products and services of linx. it?s all here: manual and software updates, application notes, a comprehensive knowledgebase, fcc information, and much more. be sure to visit often! www.antennafactor.com the antenna factor division of linx offers a diverse array of antenna styles, many of which are optimized for use with our rf modules. from innovative embeddable antennas to low-cost whips, domes to yagis, and even gps, antenna factor likely has an antenna for you, or can design one to meet your requirements. www.connectorcity.com through its connector city division, linx offers a wide selection of high-quality rf connectors, including fcc- compliant types such as rp-smas that are an ideal match for our modules and antennas. connector city focuses on high-volume oem requirements, which allows standard and custom rf connectors to be offered at a remarkably low cost. ? www.linxtechnologies.com
page 10 page 11 figure 9: fctn-rly4-*** schematic diagram re1 re2 re3 q1 2n2222 q2 2n2222 q3 2n2222 gnd gnd r1 2.2k r2 2.2k r3 2.2k r4 10k r5 10k r6 10k gnd gnd gnd r8 2.2k re4 q4 2n2222 r 9 10k gnd 1 2 3 4 5 6 7 8 9 10 jp1 gnd gnd vcc12 d1 4148 d2 4148 d3 4148 d4 4148 outa 1 ina- 2 ina+ 3 vcc 4 inb+ 5 inb- 6 outb 7 outc 8 inc- 9 inc+ 10 gnd 11 ind+ 12 ind- 13 outd 14 u4 lmv324 r23 270k r24 270k r15 100k r1 9 100k r16 100k r20 100k r11 560k r12 560k c3 0.1uf c5 0.1uf 1 2 3 4 u2 dpak-x2 gnd vcc r26 270k r25 270k r22 100k r18 100k r21 100k r17 100k r14 560k r13 560k c7 0.1uf c6 0.1uf 1 2 3 4 u3 dpak-x2 gnd vcc set re4 set re1 set re2 set re3 reset re1 reset re4 reset re2 reset re3 gnd gnd vcc vcc gnd r7 3 9 0k 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 s1 gnd c4 0.01uf gnd ant1 antenna d1 1 d2 2 d3 3 d4 4 d5 5 d6 6 d7 7 vt 8 din 9 osc1 10 osc2 11 gnd 12 a0 13 a1 14 a2 15 a3 16 a4 17 a5 18 a6 1 9 a7 20 a8 21 a 9 22 d0 23 vcc 24 u1 ht658 nc 1 nc 2 nc 3 gnd 4 vcc 5 pdn 6 nc 7 data 8 nc 9 nc 10 nc 11 nc 12 nc 13 nc 14 gnd 15 ant 16 rx1 rx-lr-s r10 270 ohm set re4 reset re4 reset re3 reset re2 reset re1 set re3 set re2 set re1 vcc vcc vcc vcc j3 jumper-smt j5 jumper-smt j2 jumper-smt j4 jumper-smt v- vcc12 + c1 1000uf + c2 10uf vcc vin 1 gnd 2 vout 3 u5 ldo vreg gnd d5 1n4001 v- swv- v+ j1 pwrjack v-
linx technologies, inc. 159 ort lane merlin, or 97532 phone: (541) 471-6256 fax: (541) 471-6251 www.linxtechnologies.com u.s. corporate headquarters wireless made simple ? linx technologies is continually striving to improve the quality and function of its products. for this reason, we reserve the right to make changes to our products without notice. the information contained in this overview guide is believed to be accurate as of the time of publication. specifications are based on representative lot samples. values may vary from lot-to-lot and are not guaranteed. "typical" parameters can and do vary over lots and application. linx technologies makes no guarantee, warranty, or representation regarding the suitability of any product for use in any specific application. it is the customer's responsibility to verify the suitability of the part for the intended application. no linx product is intended for use in any application where the safety of life or property is at risk. linx technologies disclaims all warranties of merchantability and fitness for a particular purpose. in no event shall linx technologies be liable for any of customer's incidental or consequential damages arising in any way from any defective or non-conforming products or for any other breach of contract by linx technologies. the limitations on linx technologies' liability are applicable to any and all claims or theories of recovery asserted by customer, including, without limitation, breach of contract, breach of warranty, strict liability, or negligence. customer assumes all liability (including, without limitation, liability for injury to person or property, economic loss, or business interruption) for all claims, including claims from third parties, arising from the use of the products. the customer will indemnify, defend, protect, and hold harmless linx technologies and its officers, employees, subsidiaries, affiliates, distributors, and representatives from and against all claims, damages, actions, suits, proceedings, demands, assessments, adjustments, costs, and expenses incurred by linx technologies as a result of or arising from any products sold by linx technologies to customer. under no conditions will linx technologies be responsible for losses arising from the use or failure of the device in any application, other than the repair, replacement, or refund limited to the original product purchase price. devices described in this publication may contain proprietary, patented, or copyrighted techniques, components, or materials. under no circumstances shall any user be conveyed any license or right to the use or ownership of such items. disclaimer ? 2008 by linx technologies, inc. the stylized linx logo, linx, ?wireless made simple?, cipherlinx, and the stylized cl logo are the trademarks of linx technologies, inc. printed in u.s.a.
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