Description
Magnetic Contact Sensor | 433MHz, Window or Door | Tuya Smart Life
The Magnetic Contact Sensor is a 433MHz radio frequency fundamental component in wireless home security and automation systems. It is primarily used to monitor the open or closed status of doors, windows, gates, or drawers.
Unlike WiFi sensors that connect directly to a router, these devices operate on the 433MHz radio frequency, which offers excellent range and battery efficiency but typically requires an RF bridge or a compatible alarm panel to communicate with a smartphone app.
Product features
- Wireless protocols: the device uses 433MHz radio frequency to operate.
- LED indicators: small lights on the unit usually flash to indicate successful pairing, low battery, or a triggered state.
- Instant notifications: when the magnet is removed, the user will get an alert that the door or window is open or closed.
Specifications
- Model: PST-G30-DS
- Operating frequency: 433MHz
- Power supply: a built-in 3V CR2032 button cell
- Static current: ≤ 5μA (ultra-low power consumption for long battery life).
- Alarm current: ≤ 15mA
- Gap distance: triggers when the magnet is moved more than 15mm to 20mm away from the sensor body.
If you would like to buy a smart security alarm system, please see the following products:
- Smart 433MHz Security System | Sensors, Remotes and Siren [click here]
- Smart GSM Security Alarm System | 433MHz RF system [click here]
- Smart Alarm Strobe Siren | WiFi and 433MHz compatible [click here]
- Smart Doorbell Alarm System | WiFi and 433MHz compatible [click here]
Typical applications (not limited to)
- Home
- Offices
- Rental properties
What is in the box?
- 1 x Smart Magnetic Contact Sensor
- 2 x double-sided tape
FAQ’s
- Why should I choose Tuya above all the other Smart Home Automation Platforms? [click here]
- How do I get started? [click here]
- What devices can presently be Smart Automated? [click here]
Home Automation made Smart, Simple, and Affordable via the Tuya and Smart Life Apps (Android or iOS), offering the fastest, most stable platform and the widest range of Smart Products. Supports Alexa Echo Dot, Google Home, and IFTTT, and more….





Riaan Heath (verified owner) –
Cannot comment yes, as they were out of stock, Good communication was received from the team, and awaiting their stock on the product then I could give a proper review.
Catherine (verified owner) –