The WatchGas SST4 Micro Gas Detector is a compact and rugged four-gas detector designed for personal protection, confined-space entry and demanding industrial environments. It simultaneously monitors LEL, oxygen, carbon monoxide and hydrogen sulphide, providing clear real-time readings and fast alarm notifications.

Its large LCD displays gas concentrations in ppm, %vol, mg/m³ and %LEL. NFC connectivity supports fleet management, calibration records, bump-test tracking and compliance logging, while wireless induction charging helps reduce connector damage in harsh working conditions.

Key Features

• Simultaneous LEL, O₂, CO and H₂S monitoring
• LEL range: 0–100%
• O₂ range: 0–25% volume
• CO range: 0–2000 ppm
• H₂S range: 0–500 ppm
• NFC connectivity for device and fleet management
• Wireless induction charging in approximately 2–3 hours
• Runtime of up to 48 hours, depending on configuration
• 95 dB audible alarm with visual and vibration alerts
• High, low, TWA and STEL alarm settings
• Rugged IP65/68-rated housing
• Intrinsically safe construction

Suitable Applications

• Confined-space entry
• Oil and gas facilities
• Wastewater treatment
• Shipbuilding and shipping
• Steel and manufacturing plants
• Power generation and emergency response

Certifications

ATEX, IECEx, UKEX and applicable North American Class I Division 1 and Zone 0 approvals.

FAQs

Which gases does the SST4 Micro detect?
It simultaneously monitors LEL, oxygen, carbon monoxide and hydrogen sulphide.

Is it suitable for confined-space entry?
Yes, its four-gas monitoring, compact design and multiple alarms make it suitable for confined-space safety procedures.

How is the detector charged?
It uses wireless induction charging, with a typical full charging cycle of approximately two to three hours.

Does it provide TWA and STEL alarms?
Yes, it supports configurable high, low, TWA and STEL alarm settings.