- Long Operating Range and Expandable System: Build with high quality external antenna, the signal is stronger than internal antenna. The detecting rang of the door sensor is above to 400 feet. Long enough to cover a wide area in your house. This wireless door open chime can be extended to 5 transmitters or 5 receivers base on your need.
- Customized Alarm Chime: There are 36 unique ringtones and chimes to be chose and 5 volume levels to meet your need in different time and places. Mute mode is available.
- Dual Alert: Except the 110dB chime volume, the wireless door sensor alarm provides 32 led indicator flashing to perform a visual alter to ensure you won’t miss every visitation.
- Safe Material: Made with fire-retardant materials, this wireless door open chime is safe enough to use in your house and retail store.
- Easy to Install: Plug-in designed make the receiver easy to be installed. Sponge tape for mounting the door sensor on door or window. The chime goes off when door opened.