brand new and high quality Features:Adopts radio frequency technology and stable circuit, high accurate, high-sensitive and omnidirectional.Adopts built-in 1527 working chip, fully for receiving module with common learning code(1527) Chip, such as, PT1527, EV1527, etc. Strong wireless RF signal can pass through walls, floors and doors.Easy to install and use, the 4 channel remote control system lets you take control of your gadgets, car and home or garage.Works well with the electronic control lock, light, fan, window, curtain, motor, car, lifting appliance, motor control, lifter control or other appliances with DC12V. for the most of 1527 Remote Control Relay Receiver Module.Remote Control only, other accessories demo in the picture are not includedTips:1.This remote control only support the learning code (1527) of the receiver2.This remote can not be programmed.3.It will not work if you only buy the transmitter. it is parts of the remote control system, it needs work with the Remote Control Relay Receiver module to achieve controlling. Specification:Material: PlasticOperating RF Frequency: 433MHzCoded System: 1527 Learning CodeWorking Voltage: for DC 12VWorking Current: 12mATransmitting Power: 10mWWireless Operating Distance: 150m(Free Space)Transmission Rate: 50-60KHzFrequency Deviation: 0.2MHzOscillation Resistance: 340kColor: As Pictures Shown Dimension: 9.1x4.0x1.5cm/ 3.58x1.57x0.59inQuantity: 1 Pc Note:1.No retail package.2.Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 x Remote Control