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.
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 and SST Range app
- Near Field Communication built in as standard
- Wireless charging
- Longer runtimes
- Fastest T90 in its category
Continuous 4-Gas Monitoring
Detects O₂, CO, H₂S, and LEL simultaneously, helping maintain compliance and protect workers in hazardous atmospheres.
Intuitive NFC Setup
Built-in Near Field Communication allows easy pairing with the WatchGas SST app for calibration, bump tests, and compliance logging.
Wireless Induction Charging
Eliminates fragile ports to reduce downtime and maintenance costs.
Rugged & Reliable Design
IP65/68 rating protects the device in harsh industrial conditions
Description
As many industries move from single gas to a multigas approach, it is essential for end-user adoption. The SST4 Range is designed with simplicity, size, and with the user in mind. With its compact yet rugged design, the SST4 is there when needed. 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. The device can be set up simply by using the WatchGas SST application, calibration, and bump test records. With Compliance Check, it has never been easier to manage, maintain, and ensure maximum uptime of your fleet of devices.
Product information
- Easy setup
- Near Field Communication built in as standard
- 95dB @ 30cm
- Wireless charging
- Longer runtimes
- Fastest T90 in its category
- Largest LCD
| 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 |
Industry Applications for SST4 Micro & Mini
The SST4 Micro & Mini portable gas detectors are designed for hazardous industrial environments where continuous monitoring of toxic and combustible gases is critical for worker safety and regulatory compliance.
Confined space entry safety
Provides continuous monitoring of oxygen deficiency, toxic gases, and explosive atmospheres during entry into tanks, silos, vaults, pipelines, and underground facilities.
Chemical & Petrochemical Facilities
Monitors hazardous gases in processing plants to prevent toxic exposure and explosive incidents.
Steel & Heavy Manufacturing
Protects workers from carbon monoxide exposure and flammable gas hazards in high-temperature industrial environments.
Oil & Gas drilling and production
Detects hydrogen sulfide (H₂S), combustible gases, and oxygen displacement risks during drilling, refining, and processing operations.
Wastewater Treatment Plants
Ensures safe working conditions by detecting methane buildup, oxygen deficiency, and toxic gas accumulation in enclosed areas.
Emergency Response & Fire Services
Provides rapid multi-gas detection during rescue operations, leak investigations, and hazardous material incidents.
Frequently asked questions
What gases does the SST4 detect?
Answer
What environments is the SST4 suitable for?
Answer
What safety certifications does SST4 have?
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