The Signature Series™ uses radio frequency technology, allowing you freedom and flexibility with outstanding features and increased range of up to 2 000 feet. Quickly know when you have visitors, telephone calls or emergencies with the bright flashing strobe and distinctive LEDs.

This transmitter can be used for doors or windows to let you know when it has been opened. It will transmit to the Sidekick II Strobe Receiver that will flash when activated. Includes 2 AA batteries.

Silent Call Promise: 5 Year Warranty, Superior Customer Support and Next Business Day Returns

Silent Call products are manufactured in the US, where they test and inspect every product to ensure the highest level of quality. Silent Call backs their products with this promise: Direct manufacturer 5 year warranty service and warranties serviced directly through Silent Call can expect next business day returns.