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Hydrogen Gas Detectors Forklifts Backup Power Supplies Golfcarts Battery Charging Stations System Detectors (Low Voltage) HD-11 12-24VAC or VDC input, alarm relay. HD-12 12-24VAC or VDC input, hi and low level alarm relays. • Mounts in standard 4 x 4 electrical box. • Alarm relay set at 10% of lower explosive level (10% and 25% of LEL on HD-12). • N.O. sealed reed type dry contact relays. • Easy installation. • No Maintenance or recalibration required. • Supervised system. • 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  |
