Zigbee pressure sensor

Zigbee Pressure Sensor | Chair & Bed Sensor | 40cm & 80cm

The Zigbee Pressure Sensor is an ultra-thin sensor strip that you can place invisibly under the cushion of a chair, sofa, or mattress. As soon as pressure is detected, a signal is sent to your Zigbee hub. This opens up a world of possibilities for smart automations: turn on the lights when you sit down, start your favorite playlist, or turn up the heat. The sensor runs on a replaceable CR2032 battery that lasts up to a year and is directly compatible with Home Assistant via Zigbee2MQTT and ZHA. It's available in 40cm and 80cm versions.

Note: This is a binary sensor (detects pressure/no pressure) and not a weight sensor. A ZigBee hub or coordinator is required for use.

Key Features

Invisible presence detection
Place the thin, flexible strip under a chair cushion, sofa cushion, or mattress. The sensor is completely invisible and reliably detects whether someone is sitting or lying down. Ideal for "smart chair" or "smart bed" projects.

Direct Home Assistant integration
The sensor is instantly recognized in Home Assistant via Zigbee 2MQTT (Z2M) and ZHA . No special converters or manual configuration are required. Simply pair the sensor, and it will appear as a contact or presence sensor, ready to use in your automations.

Fast and reliable response
Thanks to the Zigbee 3.0 protocol, the sensor responds instantly to changes in pressure. As soon as you sit down, the "on" status is activated; as soon as you stand up, it clears. Perfect for real-time automations without noticeable delay.

Energy efficient and long battery life
The sensor is powered by a single CR2032 coin cell battery (included). Thanks to the energy-efficient Tuya ZTU protocol, the battery lasts up to a year with normal use.

Two sizes for every application
The 40cm version is perfect for office chairs, armchairs, or specific seating areas on a sofa. The 80cm version is ideal for use under a mattress for presence detection in bed or across the width of a two-seater sofa.

Technical specifications

• Protocol: Zigbee 3.0
• Compatibility: Zigbee2MQTT, ZHA (Home Assistant), Tuya Zigbee Hub
• Model ID: TS0203
• Power supply: 1x CR2032 button cell battery (up to 1 year lifespan)
• Sensor type: Binary pressure sensor (on/off)
• Sensitivity: Responds to approximately 3-4 kg of concentrated pressure
• Dimensions: 40cm or 80cm length
• Material: Faux leather strip
• In the box: Pressure sensor strip, Zigbee controller, manual

Practical applications

Smart office chair
Connect the sensor to your workstation. When you sit down, your monitor, desk lamp, and computer will automatically turn on. Get up for a break? The music will pause and the lights will turn off.

"Good night" and "Good morning" scenes
Place the 80cm sensor under your mattress. When you go to bed at night, activate a "Good Night" scene that turns off all the lights in the house and lowers the thermostat. When you get up in the morning, a "Good Morning" scene starts with soft lighting and your favorite news playlist.

Comfort on the couch
Detect when someone sits down on the couch and automatically dim the main lights, close the curtains, and turn on the TV. Perfect for movie night.

Memories for the elderly
Use the sensor to monitor whether a parent or person in need of care regularly gets up from their chair during the day. Receive a notification if no movement is detected for an extended period.

Installation and Home Assistant

Installation:

1. Insert a CR2032 battery into the controller.
2. Place the sensor strip in the desired location (e.g. under a chair cushion).
3. Enable pairing mode on your Zigbee hub (e.g. Zigbee2MQTT or ZHA in Home Assistant).
4. Press and hold the button on the sensor controller until the LED flashes.
5. The sensor is automatically added in Home Assistant as a binary sensor.

In Home Assistant:
The sensor appears as a contact or presence sensor. Use its status ('on'/'off' or 'home'/'away') as a trigger in your automations.

Plus points

• Invisible and effective presence detection
• Direct out-of-the-box support for Home Assistant (Z2M & ZHA)
• Fast and reliable response without delay
• Long battery life (up to 1 year) on a standard CR2032 battery
• Available in two sizes (40cm and 80cm)
• Affordable solution for creative automation

Negative points

• Requires a Zigbee hub (cannot be used standalone)
• Binary sensor: does not measure weight or pressure levels
• CR2032 battery not always included as standard
• Sensitivity not adjustable (responds to approx. 3-4 kg)

Frequently Asked Questions

Does this sensor work with Home Assistant?

Yes, the sensor is recognized directly and without any additional configuration by both Zigbee 2MQTT (Z2M) and the ZHA integration in Home Assistant. It's usually identified as a door sensor (model TS0203), but it functions perfectly as a push button sensor.

Can I use this sensor to measure someone's weight?

No, this is a binary sensor. It only detects whether there is pressure or not (on/off), but not the amount of pressure or weight.

How sensitive is the sensor?

The sensor responds to about 3 to 4 kilograms of concentrated pressure. Placing a hand on it is usually not enough, but sitting down activates it immediately. A mattress doesn't activate the sensor unless someone is lying on it.

Can I use the sensor outside?

No, the sensor is designed for indoor use and is not waterproof.

Which battery do I need?

A standard CR2032 coin cell battery. This lasts up to a year, depending on usage.

What is the difference between the 40cm and 80cm versions?

Only the length of the sensor strip differs. The 40cm is ideal for chairs, while the 80cm version covers a larger area and is better suited for sofas or beds.

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