Ajax HomeSiren (Jeweller) – Wireless Indoor Acoustic Siren (White, 9NA)

Product Overview

The Ajax HomeSiren  28275.11.WH3, 9NA region frequency is a wireless indoor acoustic security siren designed to alert occupants and deter intruders with a powerful sound output adjustable from 81 to  105 dB. Operating within the Ajax security ecosystem, it features a built-in piezo buzzer, an integrated LED indicator for security status and chime notifications, and an external LED output contact for running status signaling outside the room.

Communicating via the proprietary Jeweller wireless radio protocol across distances up to 2,000 meters in open space, HomeSiren delivers instant alarm acoustic response in under 0.15 seconds. Powered by two pre-installed CR123A batteries providing up to 5 years of autonomous operation, it includes Grade 2 anti-tamper security and quick SmartBracket installation in a sleek white finish.

Key System Features & Functionality

• High-Decibel Indoor Buzzer: Powerful acoustic buzzer with adjustable volume levels between 81 dB and  105 dB to ensure prompt alerting across indoor spaces.

• Arming & Entry Chime Signaling: Emits acoustic beeps and LED flashes to confirm system arming, disarming, entry/exit delays, and door opening chime events.

• Jeweller Wireless Technology: Two-way encrypted radio communication operating across distances up to 2,000 meters (6,550 ft) line-of-sight with anti-jamming frequency hopping.

• External LED Output Terminal: Includes an onboard terminal connection to wire an external LED indicator for remote armed/disarmed status viewing.

• Up to 5 Years Battery Life: Powered by two pre-installed CR123A lithium batteries with advanced energy optimization.

• Sabotage & Tamper Protection: Grade 2 certified anti-tamper switch triggers immediate alerts if the device is pried from the mounting surface or opened.