Features: Control Mode: *Toggle/Self-Lock: Press->On; Press again->Off press button for time is working/ON, press the same button again is stop/OFF.(1 channel switch(receiver) need 1 button remote control (transmitter). *Latched/Inter-Lock: Press->On; Press other button->Off press button is working/ON, press another button is stop/OFF.(1 channel switch( receiver) need 2 buttons remote control (transmitter). *Momentary/Jog: Press and hold->On; Release->Off Keep pressing button is working/ON, loosen your finger is stop/OFF. 1 channel switch(receiver) need 1 button remote control (transmitter). Learn code and Remove Code: *Learn: Press the learning code. The indicator from 'on' to 'off', loosen your finger, press any button of the remote control, the indicator flash 2 times and off, it means you learn it successfully. It can learn more than 12 PCS 2260/2262 chip with the different code wireless remote control. *Remove: press the learning button about 8 seconds, the indicator turn on to off, it means the code had been removed successfully. * brand new and in good condition. Specifications: *Color: As pictures show *Remote control distance: about 100m(open/ideal) in theory, 10%-50% in reality(in open environment) *Encode: fixed code, soldering *Frequency: 433mHZ *Channel: 4CH *Power supply: DC 12V *Relay: DC 12V *Quiescent current: 8mA *Work voltage range of relay: AC 110-240V or DC 0-28V *Sensitivity: -105dBm *Operating temperature:-40℃~80℃ *Receiver dimension: about 68 * 47 * 17mm *Transmitter power supply: button cell(not included) Warm tip: The batteries of the transmitters are not included, so you need to purchase by yourself. Package including: 1 * Receiver 2 * Transmitters Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.