Note: The color of the item may vary slightly due to photography and your own computerWireless Remote Transmitter : 2 Key Remote Control, 1 x 27A 12V Alkaline Battery Battery, SC2260 Chip, 433MHz.Suitable for security alarm, remote control electric doors and windows, signal control, industrial control, the electric control, etc.Specifications:Product Name : Wireless Remote Transmitter Receiver;Button Quanity : 2 Key Remote Control;Channel Numbers :1CH;Powered By : 1 x 27A 12V Alkaline Battery(Not Included Here);Operating Frequency : 433MHZ;Coding Type : Learning Code1.TransmitterChannel: 1CHRemote Control Distance: 15-30mEncode: 2260 or 1527or 2264Power Supply: 1 x (27A-12V)battery(Not Included Here);2.receive board:Decode: learning codePower Supply (Operating Voltage): AC 220Vsensitivity:-105 dBmTransmitter Size : 55 x 30 x 15mm/2.17inch x 1.18inch x 0.59inch(LxWxT);Receiver Module Size :50 x 35 x 25mm/1.97 x 1.38 x 0.98inch(LxWxT);Materials : Plastic, Electronic PartsColor : Black, Silver Tone;Weight : 58g;Operation Way and Steps:1. Factory Default is Inter-locking Mode.Press the button A, the Receiver A (Relay A) turns on; Press the button B, the Receiver B (Relay B) turns on, the Receiver A (Relay A) turns off.2. Each transmitter and receiver have been finished linking and factory default mode(Inter-locking Mode) has been set up. When you receive them, you do not need to link again, you just need to connect the wiring according to our wiring diagram layout.About three modes:1)Inching Mode:Press and hold the button A, the Receiver A (Relay A)turns on; Release the button A, the Receiver A (Relay A) turns off.2)Self- lock Mode: Press the button A, the Receiver A (Relay A) turns on; Press the button A again, the Receiver A (Relay A) turns off.3)Interlocked Mode:Press the button A, the Receiver A (Relay A) turns on; Press the button B, the Receiver B (Relay B) turns on, the Receiver A (Relay A) turns off.If you want to change the factory default mode to other two working mode, below is the operation steps:1. Clear:Press and hold the learning button on the receiver board, the tomato light (Signal Light) will turn on and stay on for about 5 seconds, till the tomato light turns off, then release the learning button. It means clearing succeed, previous mode will not work after clearing successfully.2. Choose the Working Mode:Press and hold the learning button on the receiver, the tomato light will turn on and stay on for about 5 seconds, then turn off (Clearing Steps), do not release, still hold the learning button, and then the tomato light will begin to flash, it will flash once, then twice, and finally three times. (1).After the light flashes ONCE, release the learning button, it becomes Inching Mode.(2).After the light flashes TWICE, release the learning button, it becomes Self- lock Mode.(3).After the light flashes THREE times, release the learning button, it becomes Interlocked Mode. 3. Link the remote control:(After the Working Mode is chosen, you can start to link the remote control according to the mode you choose)Press the learning button on the receiver until the tomato light turn on, and then release the learning button, the tomato light will stay on. Press the button on the transmitter you want to link, and the tomato light (Signal Light) on the receiver board will flash twice, at this time, it means that the transmitter and receiver finish linking. Then you can press the button on the transmitter, the related receiver will work as the mode you choose.Note:1.When the receive has Single channel, you can only learn one button, just learn and link the button which you want to control.2. When the receiver has Two channels, you need to press the first button, then the second button, it means link successfully.3.When the receiver has More Than Two channels,such as four, six, eight, twelve, sixteen or more channels, if you link one button successfully, the other buttons on the transmitter will link automatically.Attention:The receivers in our store are mainly used together with the related transmitter in our company. If you want to use your own transmitter, please confirm if the operating frequency, chip type and vibration resistance of your transmitter are in accordance with ours. If not, they will fail to be linked to.Package include:1 x Transmitter (Battery is not included)1 x Receiver1 x Case1 x Cable1 x Screwdriver