Mosaic Alarm 135dB Keypad Motion Sensor Siren – Battery Powered for Garage & Shed

Overview

Meet Mosaic Alarm, a portable, cordless motion-activated siren designed for indoor spaces like garages, sheds, and entryways. The 135dB siren delivers a bold alert intended to attract attention and deter intruders. Lightweight and freestanding, it’s built to be simple to deploy wherever security matters most, without relying on a constant internet connection.

Key benefits you may notice

• 135dB Siren delivers a loud, attention-grabbing alert to deter potential intruders.
• Keypad with PIN codes provides straightforward arming and disarming, even for first-time users.
• 4 PIN codes required after battery replacement adds an extra layer of security when performing maintenance.
• 30-second exit delay gives you time to depart the monitored area before the alarm starts.
• Disarm window: enter the PIN within the first 5 seconds after trigger to stop the siren; otherwise, the siren runs for 30 seconds.

The unit emphasizes practical security steps without relying on apps or cloud services. It’s designed to be easy to install and operate, even for users who prefer a straightforward, keypad-driven experience.

Power, placement & versatility

• Standby time up to 2 years with four AA batteries, keeping maintenance light and infrequent.
• USB power option includes a 5 ft (1.5 m) USB cable for flexible power. (USB adapter not included.)
• Indoor-focused use ideal for garages, sheds, outbuildings, porches, or while traveling in campers or RVs. Not waterproof.

Placement tips & specs

For best results, install at about 5 ft (1.5 m) height. The device detects motion within roughly 20–26 ft (6–8 meters) and covers a 120° horizontal by 60° vertical field. Operates best in typical room temperatures (5°F–95°F). Keep it away from direct sunlight, vents, or radiators to preserve sensor sensitivity.

Real-world use cases

Set the alarm at a shed or garage when you’re away, or use it in a travel setup for brief, self-contained protection. The keypad design prioritizes ease of use for everyone in the household, including guests or family members who may not be tech-savvy.