STI-3551 Safety Technology Magnetic Sensor Wireless Transmitter

Monitor a door and receive an alert when it opens using the STI Wireless Entry Alert Sensor. Part of the STI Wireless Chime Series, the sensor wirelessly communicates with an STI Wireless Receiver (sold separately) to notify you when triggered. The sensor consists of two parts -- the main battery-powered sensor and a magnet -- which install on the door frame and the door itself. When the door opens and the two parts are separated, an alert is triggered. Includes double-sided tape for easy mounting. CONTENTS: Entry Alert Sensor, Battery, Double-Sided Tape. NOTE: Requires an STI Wireless Receiver to alert you. This sensor is not self-supervised for low battery; check battery every 6 months to ensure reliable operation.

Monitors a door to trigger alerts when the door is opened Used with an STI wireless receiver Includes double-sided tape for easy mounting