Introduction: This product works in the 2.4G frequency band, with built-in MCU and wireless transceiver chip, featuring development-free, low power consumption and easy to use. RF24YK is divided into transmitter module and receiving module, which directly outputs 6 switching signals with learning pairing function. One transmitting module can be paired with multiple receiving modules. The receiving end can also set latching and non-latching modes. It can reach 120 meters sight distance. Features: ★Free development ★2.8-3.6V power supply ★The standby current of the transmitter is 12uA, and the average current of the receiver is 24mA. ★Working Frequency:2.4-2.5Ghz ★Size: 23.3*13.7*2.1mm ★With LED indicator light Application Field: ★Wireless remote control switch ★Receiving controller ★Burglar alarm ★Remote control toys ★Wireless anti-lost device