SENKO DUO TRACER detects two gases at once; IP67; one-button; primary cell up to ~2 years on some models.

| Item | Value |
|---|---|
| Target gas | Model-dependent pairs: O₂, LEL, toxics, CO₂ |
| Sensor type | Electrochemical / NDIR |
| Measuring method | Diffusion |
| Ingress protection | IP67 |
| Explosion protection | Ex ia IIC T4 Ga / Ex ia op is IIC T4 Ga |
| Operating temperature | -20~+50℃ |
| Battery | Li/SOCl₂ 3.6V primary (~3 months or ~2 years by model) |
| Dimension | 56 × 89 × 21 mm |
| Weight | 200 g |
Diffusion dual-gas with LCD min/max. Configure via wireless or IR Link. Dock DUO calibrates up to 4 units.
| Model | DUO TRACER |
| Principle | Electrochemical / NDIR |
| Method | Diffusion |
| IP | IP67 |
| Certification | IECEx / ATEX / INMETRO / CSA·UL / CNEx & CPA / KCs |