WatchGas SST4 Micro & Mini
The SST4 Micro and SST4 Mini are four-gas devices designed with simplicity, size, and the user in mind. From use in the hot temperatures of the steel industry or Hazmat users to the extreme environments in the Oil and Gas industry. With a wide range of user options, the SST4 can be tailored for many use cases and applications.
- Compliant with RTR Software
- Near Field Communication built (NFC) as standard
- Wireless charging
- Longer runtimes
- Configurable alarms (TWA, STEL, high/low)
- Fastest T90 in its category
- Download the SST4 Brochure
Description
The WatchGas SST4 Micro and SST4 Mini represent the next generation of portable multi-gas detection. Designed with user simplicity and safety in mind, these detectors combine compact design with advanced technology to meet the challenges of modern industries. By offering multiple sensor options, including the low-power catalytic MEMS-based sensor, users benefit from extended battery life, faster response times, and increased resistance to shock, vibration, and poisoning compared to traditional detectors.
With intuitive operation and seamless compatibility with the WatchGas evosystem, such as the SST Dock, Compliance Kiosk and RTR Software, the SST4 Micro and SST4 Mini simplify compliance, reduce downtime, and ensure workers remain protected in hazardous environments. Backed by a robust design, quick induction charging, and comprehensive alarm configurations, they provide professionals with the confidence that safety is always within reach.
Product information
The SST4 Micro and Mini are designed for profesionals who operate in the harshest environments, from oild and gas to steel production and first response. Both models measure up to four gases simultaneously, including oxygen, carbon monoxide, hydrogen sulphide, sulphur dioxide, and combustible gases with different LEL sensor options.
The rugged housing is IP65/68 certified, protecting the device in the harshest conditions. Induction charging eliminates fragile connectors, making charging faster and more reliable. Whether used in confined spaces, industrial plants, or emergency response, the SST4 Micro and SST4 Mini deliver a balance of compact size, robust performance, and advanced connectivity.
| Size | SST4 Micro: 103.9mm x 62.4mm x 26.1mm SST4 Mini: 107.9mm x 62.4mm x 26.1mm *Dimensions are stated without alligator clip. Please add 4mm in depth for dimensions with alligator clip. |
| Weight | SST4 Micro: 184g SST4 Mini: 188g |
| Operating temperature | -40 to +60°C / -40 to +140°F |
| Humidity | 5% - 95% RH (non-condensing) |
| Typical battery life | SST4 Micro: LEL Low Power Catalytic – 48hr SST4 Mini: LEL Catalytic Bead Sensor – 13hr SST4 Mini: LEL NDIR – 200hr |
| Induction Charger | 2-3 hours |
| Event logging | 100 events |
| Data logging | 6 months |
| IP | 65/68 |
| Communication | NFC |
| Calibration | 6 months as standard |
| Certifications & Approvals | North America: Class I, Div. 1, Gr. A, B, C, D. Class I, Zone 0, Gr. IIC ATEX/IECEx/UKEX LEL-LPC and LEL-CAT II 1 G Ex ia IIC T4 Ga I M1 Ex ia I Ma -40°C ≤ Tamb ≤ +60°C EN 50270:2015+AC:2016, EN 301 489-1 V2.2.3 EN 301 489-3 V2.1.1, RoHS EN63000:2018 LEL-IR sensor II 1 G Ex ia op is IIC T4 Ga I M1 Ex ia op is I Ma -40°C ≤ Tamb ≤ +60°C |
| Warranty | 2-year warranty as standard |
| SST4-MICRO-X1OMH-Y | WatchGas SST4 Micro LPC/O2/CO/H2S (filtered) | Low Power Cat Bead | |||
| SST4-MINI-X3OMH-Y | WatchGas SST4 Mini LEL NDIR/O2/CO/H2S (No H2 or C2H2) | Non-Dispersive IR | |||
| SST4-MINI-X2OMH-Y | WatchGas SST4 Mini LEL CAT/O2/CO/H2S (unfiltered) | CAT Bead |
Please check availability and delivery time with your local WatchGas distributor.
Please contact WatchGas or your local WatchGas distributor for the order information on accessories and spare parts.
The device comes standard in yellow.
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SST4: Micro/Mini - Datasheet |
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SST4: Micro/Mini - Quick start guide |
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SST4 Micro/Mini, SST4 Pump and SST5 - Manual |
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Declaration of Conformity – SST4 - Declaration of Conformity |
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The New Generation of MEMS-Based Combustible Gas Sensors - White Paper |
