Extra Battery Receiver Doorbell

EXTRA BATTERY-POWERED RECEIVER DOORBELL, Extra battery-powered wireless doorbell. Range: 100 or 200 meters, depending on the transmitter with which it is installed. Power: 3 x 1.5V R6 batteries (not included). White color. 32 different melodies. 4 volume levels. Compatible with: EM HEB 001, EM HEB 004, EM HEB 005, EM HEB 006, DM SEN RT2, TI HEB K26, TI HEB K27, TI HEB K28 and TI HEB K29.