Specifications: Remote control Transmitter Operating voltage: DC12V (23A/12V battery x1) Transmitting frequency: 433MHz Encoding Type: Fixed code Receiver sensitivity: > -105dB Transmission distance: 100M (Open field) Size: approx 55*28*10mm Receiver board Operating voltage: AC 110V - 240V Output voltage = Operating voltage Operating frequency: 433MHz(Same with Remote control) Encoding Type: learning code(you can buy extra 315MHz remote controllers for this receiver) Rated contact current of relay: 15A/240VAC, 15A/110VAC (Please notice that: Although the relay is marked 30A 240VAC. The 30A is for the peak current of your load. The rated current of your load should be less than 15A) Box size: approx 65 x 45 x 28mm Package Includes: 1 x Wireless receiver 1 x 2 button remote control transmitter Clear code operation instructions: Long press the learning button for about 8 seconds, and the LED flashes to clear the code successfully. !!!tips: To switch any working mode must first clear the code before learning. Function mode description: Pointing mode: short press the learning button once, and the LED flashes once, press the remote control A key, and the LED flashes three times, indicating the successful learning of pointing mode. Self-locking mode: short press the learning button twice, and the LED flashes twice, press the remote control A key, and the LED flashes three times, indicating that the self-locking learning success, when the A key is pressed a relay suction, and then press the A key again relay disconnection. Interlock mode: short press the learning button three times, and the LED flashes three times, press the A key, and the LED flashes three times, then press the B key, and the LED flashes three times, indicating successful interlock learning, then press the A key relay suction, then press the B key relay disconnection. Delay function description: Delay five seconds learning method: short press the learning button four times, and the LED flashes four times, press and hold the remote control A key, and the LED flashes three times to indicate successful learning, press the A key once, and the relay will be automatically disconnected after five seconds of suction. Ten seconds learning method: short press the learning button five times, the LED flashes five times, press the A key, the LED flashes three times to indicate successful learning, press the A key, and the relay will be automatically disconnected after 10 seconds. Fifteen seconds delay learning method: short press the learning button six times, the LED flashes six times, press the A key, the LED flashes three times to indicate successful learning, and press the A key to automatically disconnect the relay after 15 seconds.