Radiant CO-Pocket™ Carbon Monoxide Detector

Overview

Features

Fast visible response. After warm-up, CO-Pocket-2027 responds to CO test gas within 5 seconds. The live reading updates every second, helping you see a developing change without waiting for an alarm threshold.

A color display with more useful information. Large CO numerals, color-coded warning levels, and an on-screen level guide replace the original black-and-white presentation. Readings appear in 1 ppm increments, including single-digit values. The display also shows battery voltage, internal temperature, and sensor communication status.

90 minutes of history, plus PEAK. Each history bar preserves the highest reading from one minute, so a brief increase remains visible after the current reading falls. PEAK retains the highest reading since power-on. You do not have to catch every change as it happens.

Individually calibrated at Radiant. We establish each unit’s clean-air zero, calibrate its response with 100 ppm reference gas, and measure its temperature response in a heated chamber. The instrument automatically applies its own temperature-correction table. No user calibration is required.

Tougher construction and simpler controls. The transparent top is paired with an extra-tough nylon bottom. A front-panel slide switch provides positive on/off control, while two buttons handle brightness, screen wake, and temporary alarm silence.

Visible warnings, with optional powerful sound. The screen changes to yellow at CAUTION and red at ALERT. A flashing red light begins at 35 ppm. Add the optional 110 dB external alarm for repeating audible warnings at 50 ppm and above. A button press silences the sound temporarily without stopping the visual warnings or monitoring.

The external alarm Annunciator is sold separately; the instrument has no internal beeper.

Rechargeable, with continuous monitoring while the screen sleeps. Up to 48 hours of operation on a single charge, with automatic display sleep. Monitoring, history, and peak capture continue while the screen is dark, and a CO warning wakes the display. Recharge through USB-C using the included cable; the instrument can also operate while charging.

Calibration

We check each instrument in clean air, expose it to 100 ppm reference gas, and characterize it in a temperature chamber up to 42°C. The instrument stores its individual correction data and applies them automatically during operation. This is calibration for the particular unit you receive—not simply a common adjustment applied to every sensor.

There is no pinhole adjustment or user calibration procedure. Before use, switch the instrument on in clean air and allow the full three-minute warm-up to finish.

Tech Details

• CO range: 0–999 ppm, in 1 ppm increments; updated every second
• Response: Begins responding within five seconds to 100 ppm CO test gas after warm-up
• Warning levels: CAUTION: 11 ppm · ALERT: 35 ppm · ALARM: 50 ppm · DANGER: 100 ppm
• Display: Color screen with eight adjustable brightness levels
• History and peak: 90-minute color history; highest reading retained since power-on
• Calibration: Individual clean-air, 100 ppm gas, and six-point temperature calibration at Radiant
• Battery operation: Up to 48 hours of continuous monitoring per charge with automatic display sleep
• Charging: USB-C; cable included; up to six hours for a full charge; may operate while charging
• Operating temperature: −5°C to +42°C
• Dimensions: 2.4 × 2.6 × 0.6 inches
• Weight: 1.87 ounces / 53 grams
• Audible alarm: Optional external 110 dB alarm; no internal beeper
• Warranty: Three years

Buy the Annunciator Alarm

• The external alarm Annunciator is sold separately. Search PN: 10-07740.