Crowcon – T4 Personal 4 Gas Monitor

The Crowcon T4 Personal 4 Gas Monitor is a compact detector with 18hr battery, triple alarms and IP65/67 protection. Available to buy, hire or service.

Crowcon T4 Personal 4 Gas MonitorT4-HOCA-CRD
£559.00

All prices exclude VAT

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

      This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

      Need to talk to us?

      Have questions or need expert advice? Our team is ready to assist you. Chat with a knowledgeable expert in real-time and get the information you need.



      Crowcon – T4 Personal 4 Gas Monitor

      The Crowcon T4 Personal 4 Gas Monitor is a lightweight, handheld gas detector that packs serious performance into a compact unit weighing less than 10oz. Designed to detect the four most common gas hazards—Carbon Monoxide (CO), Hydrogen Sulphide (H₂S), Oxygen depletion (O₂), and flammables—the T4 combines ease of use with advanced functionality, making it ideal for everyday use in demanding environments.

      Despite its size, the T4 Personal 4 Gas Monitor features an intuitive menu system and impressive data logging capabilities, recording up to 130 hours of data or 3,500 individual events. Powered by a rechargeable Li-ion battery, it delivers up to 18 hours of continuous run time on a single charge, with a fast 5.5-hour recharge cycle to keep your team moving.

      Safety alerts are delivered through three alarm types: a 95 dB audible alarm, bright red and blue LED visual indicators, and an integrated vibrating alert, ensuring you’re never caught unaware. The unit is drop-tested to 4 metres onto concrete and housed in a rugged, rubberised casing, rated IP65 and IP67 for dust and water ingress protection.

      Tested to stringent EMC standards and certified by ATEX, IECEx, and more, the T4 Personal 4 Gas Monitor is built for the harshest environments, operating reliably in temperatures from -20°C to +55°C and up to 95% humidity.

      With one-button activation, a bright, easy-to-read display, and simple navigation, the T4 requires minimal training. Its integrated alligator clip and tether loop C allow for easy wearability, and a range of accessories are available for further convenience.

      Key Features:

      • Detects CO, H₂S, O₂, and flammables
      • 130 hours of data logging and up to 3,500 event records
      • 18-hour battery life with fast 5.5-hour recharge
      • Audible (95 dB), visual (LED), and vibrating alarms
      • IP65/IP67 rated – dust and water resistant
      • 4m drop-tested for rugged reliability
      • EMC tested, with ATEX and IECEx approvals
      • Simple one-button operation and user-friendly interface
      • Portable and wearable with integrated clip and tether loop
      • Positive Safety indicator for quick operational status checks
      • Charger included

      Frequently Asked Questions

      Can’t find your answer? Get in touch with our team.

      • No, this a battery run device.

      • No, it’s a personal gas monitor.

      • Yes, it will require a 6 monthly service as per the manufacturer recommendations.

      • No, however we would suggest that you undertake a Confined Space Course which covers the use of gas monitors. Our sister company Citrus Training offers these courses.