The SECO-LARM Miniature Single Photobeams, E-961-S50TB (single-frequency) and E-964-S50TB (multi-frequency), are simple, easy-to-use, and easy-to-install single-beam infrared motion sensor.

The devices easily install almost anywhere to provide an invisible beam that, when broken, sends a signal to activate a light, beeper, or other device.

This makes the devices perfect for use as part of an access control system, a door or window monitor, a retail store customer alert, or many other places where the user needs to know that someone has entered a specific room or building or other protected area.

The Miniature Single Photobeams are weather-proof, and come with built-in AGC control circuit that helps filter out possible disturbance caused by local lighting conditions.

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