Multi-gas detector (O2, LEL, CO, H2S or SO2) with a catalytic bead or NDIR infrared LEL sensor (up to 200 h battery life with IR). Induction charging, NFC, IP65/68, ATEX/IECEx Zone 0.
Specifications
| LEL sensor | Catalytic bead or Non-Dispersive Infrared (NDIR), 0–100 % LEL, res. 1 % LEL; alarms low 10 % / high 20 % |
|---|---|
| O2 sensor | 0–25 % vol, resolution 0.1 % vol; alarms low 19.5 % / high 23.5 % |
| CO sensor | 0–2000 ppm, resolution 1 ppm; alarms low 35 / high 200 ppm; TWA 20 ppm, STEL 100 ppm |
| H2S sensor | 0–500 ppm, resolution 0.1 ppm; alarms low 10 / high 15 ppm; TWA 10 ppm, STEL 15 ppm |
| SO2 sensor | 0–100 ppm, resolution 0.1 ppm; alarms low 5 / high 10 ppm; TWA 2 ppm, STEL 5 ppm |
| Typical battery life | Catalytic bead LEL: 13 h; NDIR LEL: 200 h |
| Charging time | 2–3 hours (induction charger included) |
| Size | 107.9 × 62.4 × 26.1 mm (+4 mm with alligator clip) |
| Weight | 188 g |
| Operating temperature | -40 to +60 °C |
| Humidity | 5–95 % RH (non-condensing) |
| Charging | Induction (wireless) charging |
| Event logging | 100 events |
| Data logging | 6 months |
| Ingress protection | IP65 / IP68 |
| Communication | NFC – WatchGas SST App (bump, calibrate, assign, download event and data logs) |
| Calibration interval | 6 months (industry standard) |
| Alarms | 95 dB at 30 cm; High, HighHigh, Low, LowLow, TWA and STEL configurable via SST Dock or App; backlit display |
| Display units | ppm, % vol, mg/m³, % LEL; correction factors via App |
| Warranty | 2 years |
| Accessories | External filter SST-MINI-XFIL-10; lanyard bar SST4-POUL-10; universal cradle charger SST-IND-S; 5-way stackable charging cradle SST-STACK-CHR; aspirator bulb/pump 7189201; aluminium kit 460039; SST Dock; SST RTR web reporting software |
Standards & Certifications
- ATEX / IECEx / UKEX (LEL-LPC & LEL-CAT): II 1 G Ex ia IIC T4 Ga; I M1 Ex ia I Ma
- ATEX / IECEx / UKEX (LEL-IR): II 1 G Ex ia op is IIC T4 Ga; I M1 Ex ia op is I Ma
- North America: Class I Division 1 Groups A, B, C, D T4
- US: Class I Zone 0 AEx ia IIC T4 Ga (IR: AEx ia op is IIC T4 Ga)
- Canada: Ex ia IIC T4 Ga (IR: Ex ia op is IIC T4 Ga)
- EN 50270:2015+AC:2016
- EN 301 489-1 V2.2.3
- EN 301 489-3 V2.1.1
- RoHS EN 63000:2018
For pricing and availability, please request a quotation.

