This manual contains information on the installation and operation of the H450EN Carbon Monoxide alarm.
The Honeywell H450EN carbon monoxide alarm detects CO using an electro‑chemical cell and provides visual (flashing red) and audible alerts when dangerous levels are present. The manual explains safe installation, positioning, testing, and maintenance procedures for reliable operation in homes and other indoor environments.
Key sections cover safety warnings, mounting options, activation, monthly testing, battery life, specifications, and emergency response steps. Contact information for Honeywell Analytics support and regulatory compliance details are also provided.
| Model | H450EN |
|---|---|
| Gas Detected | Carbon Monoxide |
| Detection Principle | Electro‑chemical cell |
| Alarm Indication | Flashing red light and audible alarm |
| Alarm Levels (100 ppm) | 10 to 40 min |
| Operating Temperature | 10 °C to 40 °C |
| Humidity Range | 30 % to 90 % RH (non‑condensing) |
| Warm‑up Time | Instantaneous |
| Normal Operating Life | Up to 7 years |
| Battery Life (alarm condition) | At least 5 days |
| Dimensions | 110 mm × 76 mm × 34 mm |
| Weight | Approximately 110 g |
The alarm should be tested once a month by pressing and holding the test button for 5 seconds.
The battery lasts up to 7 years under normal use and at least 5 days when the alarm is sounding.
The alarm can be wall‑mounted using the supplied fixing pad and pin, or installed free‑standing with the provided fixing kit.