garage alarm sensor

Garage alarm sensors are commonly battery-powered (AA, AAA or 9V) for easy, no-wiring installation. Some detectors plug into AC outlets, and a smaller number require hardwired installation. The same product descriptions usually note whether batteries are replaceable or if AC/hardwired power is required.

Ranges vary by type: typical indoor motion sensors cover about 5–20 ft (1.5–6 m) and have coverage angles roughly 40°–120°. Driveway or long-range sensors are designed to reach much farther and can transmit to a receiver for up to several hundred feet, but exact distance depends on the model and environment.

Operating temperature specifications vary by model. Examples include ranges like 14°F–122°F, 32°F–131°F, or 5°F–140°F. Some wireless transmitters and receivers list wider temperature tolerances, and at least one motion/entry sensor in these listings is described as weather‑resistant and suitable for outdoor use—check each product’s spec sheet for exact outdoor ratings.

Common battery types in these listings are 9‑volt cells (used in some sensors or as backups), AA and AAA cells (used in many motion sensors and receivers), and smaller 12V 23A cells (often used for magnetic transmitters). Always confirm the battery type in the product specifications.