Heath Zenith Wireless Plug-In Doorbell Kit with Sensor, White

The SL-7368-02 entry alert door chime features a sensor that activates the plug-in chime when the sensor is tripped. The entry alert chime provides up to 100 ft. transmission range between the sensor and plug-in chime. The chime has an 8-note Westminster melody or a 2-note melody with adjustable volume control to suit varying sound needs. The SL-6168 is great for small business, stores, workshops or anywhere there is a need to be alerted to visitors. The entry alert kit includes 1-chime receiver and a magnetic sensor (sensor battery included).