1.Receiver product characteristics(1) Working frequency: 433.92MHz;(2) Music quantity: 30 pieces;(3) Output method; Horn;(4) Demodulation method: ASK;(4) Shell material: ABS;(5) Control method: Equipped with a remote control for control;(6) Product size: 56.5 * 33 * 5.3mm (excluding shell);(7) Product weight: 7.88g (excluding shell and speaker).2. Remote Control Product Features(1) Working frequency: 315/433.92MHz;(2) Battery type: button battery 2016 * 3;(3) Modulation method: ASK;(4) Encoding format: EV1527;(5) Shell material: ABS;(6) Product size: 45 * 45 * 14mm (including shell);(7) Net weight of product: 11g (including shell and battery).3. Operating Function Description(1) Code learning operationPre and hold the volume button for 5 seconds to enter the learning mode. The LED light will stay on for a long time. Pre and hold the remote control to send a code. The learning is succeful, and the LED light will turn off once (200ns) to restore its long light. Learning failed, the LED light goes out twice (each time it goes out for 200ns, with an interval of 200ns), and at the same time it drops twice to exit the learning mode - pre the volume button once to exit the learning mode (without switching the volume).(2) Remote Control InstructionsAfter succefully matching the code, pre the remote control button to start music.(3) Key Description1. Volume button: Click on the volume button to cycle through high - medium - mute, feedback a beep of the same gear, and flash the LED (200ns) once.2. Music switching button: Pre the music switching button once to switch to the next music, and the music can be cycled.(4) Clear code operationLong pre and hold the volume button of the reminder, then connect the power, and the indicator light flashes to indicate succeful code clearing.