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Hydrogen Gas Detectors Forklifts Backup Power Supplies Golfcarts Battery Charging Stations 120 Volt Unit HD-21-1-BR buzzer and relay, mounts in 4 x 4 electrical box. • Loud alarm sound: Approx 85db at 10 feet. • Buzzer silencing switch. • Easy installation • Supervised system. • No maintenance or recalibration required. • Recommended Coverage: 900 sq. feet. • All units are 100% Gas Tested. • Mounting Height: One foot below ceiling. • Solid-State Sensor: Maintenance Free Manufacured By: Macurco Inc. Distributed By Engwald  |
