Wireless Doorbell, ERA-UTDCR Door Chime with 4000 Feet Range, Ideal Wireless Door Chime for Business & Home, Long Range Wireless Doorbell Goes Through Multiple Walls & Floors, Concrete, Metal & Brick

INCREDIBLY STRONG, POWERFUL & LOUD DOORBELL : Heavy duty, waterproof wireless door chime transmitter signal penetrates objects that other long range wireless doorbell systems simply can't - even travels through several reinforced concrete walls as well as separate buildings. Adjustable volume control from mute up to 95db. Effective even in the largest homes & commercial buildings. DUAL FUNCTION TRANSMITTER : Can be used as a typical Doorbell Chime push button or as a magnetic door chime where door chimes when door opens making it perfect for a retail door chime, store door entry chime, gate alert, warehouse doorbell or even window alarm. INTEGRATION WITH 12VDC DEVICES REGARDLESS OF MANUFACTURER : Only this wireless door chime gives you the ability to add 12VDC devices (strobes, buzzers, sirens, bells, etc) with (4) 12VDC outputs - 1 per each of the 4 zones. Transmitter features (1) N/O, N/C relay & plug in receiver has (1) “C” relay. EXPANDABLE, CONFIGURABLE & SIMPLE INSTALLATION : Easily pair an unlimited number of transmitters to a receiver - each receiver has 4 zones, allowing for one of 12 melodies per zone. Easy, hassle-free pairing transmitter to receiver. A WIRELESS DOORBELL FOR HOME OR BUSINESS WITH COUNTLESS USES : Door announcer, call button for elderly, magnetic door entry alert security contact sensor for gates & windows, classroom doorbell, wireless panic button to alert one or multiple rooms or locations far away., Weight: 0.02 Pounds