[One Size a]

[One Size b]

Features and Specifications
The button supports up to 2. 0 pieces, and the receiver supports up to 100pcs.
2. Multiple buttons are paired with one or more receivers in the same system, so you can set each button to another ringing
3. Power Off Memory Function: Turn on after power off, no need to re-adjust the rings sound and lock it.
4. Transmitter has no screw chuck design. It is waterproof and can be done without a rubber ring.
5. Transmitter: 23A 12V Alkaline battery (batteries are not included and need to be purchased separately.)

6. Receiver Voltage: 110-220-240V
7. Receiver is USB power supply, more random and convenient
8. Receiving distance: 300 meters in open area.
Wireless signal is affected by obstacles. More obstacles, the more severe signal loss.
10. The return machine can choose 5 levels (Muteable) 0-110dB and 60 music.
11. Size: Transmitter 56 * 56 * 16mm, Receiver 77 * 46 * 20mm
Note: Button cannot be placed on iron door to block signal.
How to pair signals?
1.5x way: Press and hold the volume button on the receiver for about 5 seconds (light will turn on), release the volume button and immediately press the button, the signal will pair well.
How to change and lock music
Press and hold the volume button on the receiver before inserting the power socket. Plug in the power socket, release the volume button, press the music button to adjust to your favorite music until the light of the receiver. Hold the ringing sound while holding the volume button again, press the transmitter twice immediately to lock the music normally.

Package Content:
3x Outdoor Transmitter
1 Indoor Receiver
The battery is used with the battery, the button converts kinetic energy into electrical energy and sends a signal when pressed