The Door/Window Access transmitter uses two magnetic bars connected to the door or window frame. Once someone opens the door or window and breaks the magnetic connection, the transmitter sends a signal to any Medallion Series receiver, which will alert you with flashing lights or vibration.

With the Medallion Series you get million-code technology, which means that your system will never get a false alert from a neighboring radio frequency signaling system. It's ideal for apartments, dorms, condos and hotels, as well as single-family homes.

Features:

• Transmitter is connected to magnetic bars with a 24-inch wire
• Up to 500ft range
• Uses 2 AA batteries (included)
• Low battery indicator light

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.