Button Saving Mini Relay Contact RF Wireless Switches DC3.7V-12V 433Mhz Small Remote Switches much more lower power consumptiononly 0.1-0.6 ma standby currentit is a Relay Contact Mini Remote Control Switch. Input DC3.7V-12V Output 0V Switching Value ,use Relay Contact NO (Normally Open) ( Common)or NC ( Normally Closed ) ( Common)Color: green+blackMaterial: PCB+plasticWorking Voltage: DC3.7V-12VQuiescent Working Current: 0.1-0.6maWorking Current: 20-30maMax Load: 1A Relay have better load less than 0.7AReceiving Sensitivity: -110dBmLearning Dot to add transmitter and adjusted Momentary Toggle LatchedMomentary----- Press and Hold---ON, Release----OFFToggle-------Press one time ----ON. Press it again ----OFFLatched--------Press A ----ON, Press B-----OFF- Black----------Input - GND+ Red------------Input + VCCNC ------------NC (Normally Closed)-Yellow------- (Common)NO Yellow ----------NO (Normally Open)Package Contents:1 x Receiver1 x Remote(2 CR2016 button batteries not included)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.