Material description: plastic color: waterproof grade: IP55 Working temperature: - 30C to+70 Working crane: 300 m (obstacle free) Working frequency: 43392 Volume: 0-110 dB (adjustable level 5, with mute control) Transmitter battery: 12 V 23 alkaline zinc manganese battery (integrated) Receiver (length x width x thickness): 6 * 6 * 15cm Transmitter (diameter x thickness): 78 * 5cm Package 1 includes: 1 * Receiver, 1 * Transmitter package 2 includes: 2 * receiver, 1 * The transmitter is easy to trigger a dog ring tone. Just gently push or push it onto the touch pad to activate the wireless ring tone through the nose or paw. The distance between two rings is about 20 seconds. You need to press a dog or a big dog to do this. 2 Simple installation All dog rings used for cleaning and learning are wireless. Tape the transmitter to the door/floor/wall Double sided 3M adhesive, even on the map, Then place it anywhere you want, just connect the receiver to the power socket. The correct method is simple and easy to use. 3 tones and volume adjustable smart dog ringtones provide 55 ringtones and 5 volume levels, from 0 dB to 110 dB. You can set it to 0 dB (mute) when needed, and the wireless distance is 4300 m. The pet ringtone is equipped with a transmitter and receiver The receiver is easy to pair, the signal transmission is stable, and the anti-interference performance is good. 5IP55 waterproof built-in seal ring can protect the indoor components from water and dust, extend the service life, and work normally in rainy days Products from BAZHOU's store