CALL (610-280-9100) ABOUT PURCHASING THIS ITEM: The Macurco 6-Series are low voltage, dual relay gas detector, controller andtransducers. The 6-Series have selectable 4-20mA output, buzzer and digital displayoptions. It is an electronic detection system used to measure the concentration ofvarious gases and provide feedback and automatic control to help reduce gasconcentrations in parking garages, warehouses, boiler rooms, vehicle maintenancefacilities, battery rooms, kitchens or other commercial applications. Gases: CM-6 Carbon Monoxide (CO) GD-6 Combustibles (LEL) TX-6-ND Nitrogen Dioxide (NO2) TX-6-AM Ammonia (NH3 TX-6-HS Hydrogen Sulfide (H2S) RD-6 Refrigerants (REF) CD-6 Carbon Dioxide (CO2) OX-6 Oxygen (O2) Quick Specs: Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC Current @ 24 VDC: 75 mA in alarm, 50 mA fan relay on and 23 mA stand by Shipping Weight: 1 pound (0.45 kg) Size: 4 1/2 x 4 x 2 1/8 in. (11.4 X 10.2 X 5.4 cm) Color: Dark Gray (Standard) or White Housing