Monitor natural gas and cooking LPG on one screen
Bring gas and temperature monitoring together on a colour screen. PST-GS21 detects natural gas and liquefied petroleum gas (LPG), including propane and butane, combining alerts in the room with Smart Life or Tuya Smart notifications.
Natural gas and LPG
Detects natural gas CH4 and liquefied petroleum gas (LPG), propane and butane.
Clear information at a glance
A colour TFT screen displays gas level, temperature, time and remaining sensor life.
Alerts nearby and on your phone
Sound, a visual indicator and app messages bring multiple alerts together in one device.
Ready for a compatible valve
A control output connects to a compatible valve or actuator to close the gas source. The valve or actuator is sold separately.
What you need to get started
- A USB power supply rated DC5V / 1A.
- A 2.4GHz Wi-Fi network and Smart Life or Tuya Smart, with internet access for phone notifications.
- Allow 180 seconds of warm-up and choose the installation position for the gas type.
Model and connectivity
| Model | PST-GS21 |
|---|---|
| Connection | Wi-Fi 2.4GHz, IEEE 802.11 b/g/n |
| Power supply | DC 5V / 1A via USB |
| Gases | Natural gas CH4 and LPG (propane and butane) |
| Display range | 0-100%LEL |
| Gas alarm threshold | 6%LEL ±3%LEL |
Power and operating details
| Heat alarm threshold | 57°C |
|---|---|
| Alarm volume | ≥70dB |
| Warm-up | 180 seconds |
| Valve / actuator output | 12V / 300mA for 15 seconds |
| App | Smart Life / Tuya Smart |
In the box
Gas sensor, power adapter, mounting accessories and user manual.
Usage guidance
Using your device
Natural gas and LPG require different installation positions; follow the manual. Continuous power is required. The additional heat alert does not replace a smoke or CO detector. If the alarm sounds or a leak is suspected, follow gas-leak response procedures and seek qualified assistance.
Questions to help you choose
Is it suitable for cooking LPG?
Yes. It supports LPG, including propane and butane, as well as natural gas CH4.
Is a gas valve included?
The valve or actuator is sold separately. A control output is provided for a compatible accessory.
What can I see on the screen?
Gas level, temperature, time and remaining sensor life, so you can check the information directly on the device.
