12v rf wireless relay remote control switch, 10a universal 4-channel 433mhz remote control relay switch for motor, diy function, home use & more (2 transmitters with 1 receiver) bwss <b>about receiver:<b/><br><br>model no.: ak-rk04s-12-b<br>1. working voltage: dc12v<br>2. quiescent condition: less than 6ma<br>3. working temperature: -40 degree +80 degree<br>4. receiver sensitivity: more than -105dbm<br>5. working frequency: 433mhz<br>6. output voltage: dc and ac is optional<br>7. output current: less than 3a<br>8. max load current: 20a<br>9. size: 7.2 x 5.2 x 2.6cm<br><br>about working way:<br>working way changed by jumper on pins<br>momentary: jumper doesn't connect any two pins. <br>relay: press and hold -> on; release -> off. <br>toggle: jumper connects the pin t and pin s. <br>relay: press -> on; press same button again -> off <br>latched: jumper connects the pin l and pin s. <br>relay: press -> on; press other button -> off. <br><br>about learning and clearing method: <br>learning: press learning button, the indicator off, loosen finger, press any button of the remote transmitter, indicator flashes three times, meaning learning succeeds.<br>clearning: hold press learning button about 8 seconds,,indicator from off to on,then press remote ,relay did not respond ,it means clearning code successful. <br><br>about transmitter:<br>buttons: 4 buttons <br>working voltage:dc6v (2pcs cr2016)<br>operating frequency :433mhz<br>remote distance: 20-50m<br>operating current: 13 mah<br>encode: fixed code / ev1527 code<br>size: 5.7 x 3.2 x 1.1cm<br><br>package includes<br>2 x transmitters<br>1 x receiver <br>1 x user manual