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Macurco 3M CM-21A CM-21A

Macurco 3M
CM-21A
CM-21A

CO detector and ventilation controller for use in commercial applications.

• Status LED’s
• 12-24 VAC or VDC operation
• Dual relays: fan (SPDT) and alarm (N.O.)
• Fan relay actuation: Selectable at 25 ppm, 35 ppm (default), 50 ppm or 100 ppm CO within 5 min.
• Alarm relay actuation: Selectable at 100 ppm CO within 3 hours or 200 ppm CO within 10 min.
• Mounts in 4 x 4 box

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