Macurco CM-E1-RS Round Surface-Mount Carbon Monoxide Detector

The Macurco CM-E1-RS is a reliable round surface-mount carbon monoxide (CO) detector built for residential and light commercial environments. Running on low voltage (9-32 VDC), it connects easily to fire or burglary panels and provides clear audible and visual alerts when CO is detected.

Equipped with a 10-year electrochemical sensor, this detector needs no calibration and delivers long-term performance with minimal maintenance. The device features a local Temporal-4 sounder, LED indicators for normal, alarm, and trouble status, plus both alarm and supervisory relays.

Designed for ease of installation and durability, the CM-E1-RS comes with a base and supports surface mounting. It is UL-2075 listed and approved by the California State Fire Marshal, making it suitable for safety-critical applications.

Key Features

• Operates on 9-32 VDC for compatibility with standard low-voltage systems
• 10-year electrochemical sensor, no calibration required
• Temporal-4 sounder for alarm; LED indicators for alarm, trouble, and normal status
• Alarm and trouble relay outputs for integration with fire/security panels
• Round surface-mount design with base included
• UL-2075 listed and California State Fire Marshal approved

Technical Specifications

• Voltage: 9-32 VDC
• Current Draw (Normal / Alarm): ~15 mA / ~35 mA
• Alarm Relay: SPST, 100 mA at 40 VDC
• Trouble Relay: SPST, 100 mA at 40 VDC
• Sounder Output: 85 dB at 10 ft, Temporal-4 pattern
• Operating Temperature: 40 °F to 100 °F
• Sensor Life: 10 years with end-of-life indicator
• Coverage Area: Up to 900 sq ft
• Certifications: UL-2075 listed, CSFM approved