Zigbee Temperature and Humidity Sensor

The DIYANI ZG-227Z is a compact Zigbee 3.0 sensor that measures temperature and humidity in real-time and reports them to your smart home hub (Zigbee coordinator that controls Zigbee devices). It is ideal for monitoring the climate in living rooms, bedrooms, basements, or offices, and for controlling heaters, fans, or dehumidifiers based on accurate data. This sensor works entirely locally via Zigbee 3.0 (a protocol for wireless smart home devices), with no cloud dependency, and automatically reports current readings to your hub every 5 minutes.

What can this sensor do?

The ZG-227Z is a battery-powered sensor that measures temperature (-10 °C to +50 °C) and humidity (0%–95% RH) with high accuracy (±0.3 °C for temperature, ±3% for humidity). The device uses Zigbee 3.0 to communicate wirelessly with compatible hubs and platforms such as Home Assistant, allowing you to monitor the climate and build automations (for example: turning on a fan if the humidity rises above 70%).

Connectivity and protocols

• Protocol: Zigbee 3.0 (requires a Zigbee hub such as Home Assistant with ZHA, Zigbee2MQTT, Homey Pro, or similar coordinators)
• Communication: Wireless, mesh network (the sensor does not extend the Zigbee network, it functions only as an end device)
• Reporting interval: Temperature, humidity, and battery status are automatically reported every 5 minutes
• Range: Up to approx. 30 meters in open space between the sensor and hub (depending on obstacles and other Zigbee devices in the network)

Platform compatibility

• Home Assistant: Excellent support via ZHA (native Zigbee integration in HA) and Zigbee2MQTT; reports entities for temperature, humidity, and battery percentage
• Other hubs: Compatible with Homey Pro and many other Zigbee 3.0 certified hubs
• Voice assistants: Works with Alexa and Google Assistant via supported hubs (e.g., "Alexa, what is the humidity in the living room?")
• Matter: No native Matter support; only via Zigbee 3.0

Power and energy

• Battery: CR2450 (3V, included with purchase)
• Battery life: Approximately 1 year at normal reporting intervals (every 5 minutes), depending on ambient temperature and signal strength
• Battery status: Battery percentage is reported in ZHA and Zigbee2MQTT for proactive low-power alerts

Functional features and sensor specifications

• Temperature range: -10 °C to +55 °C (suitable for indoor and unheated spaces)
• Temperature accuracy: ±0.3 °C (high precision for reliable climate automations)
• Temperature resolution: 0.1 °C (fine-grained measurements, ideal for heating control)
• Humidity range: 0%–99% RH (relative humidity, no condensation)
• Humidity accuracy: ±3% RH (accurate enough for mold prevention and comfort monitoring)
• Humidity resolution: 1% RH
• Sensor type: Digital temperature and humidity sensor
• Response time: Automatic update every 5 minutes; the sensor reacts to climate changes within seconds but only reports at the next interval

Automation and smart home integration

• Automations in Home Assistant: Build scenes and automations based on temperature and humidity thresholds (e.g., turn on dehumidifier at >70% RH, adjust heating at <18 °C)
• Calibration: Temperature and humidity calibration only adjustable via Zigbee2MQTT (absolute offset for more accurate readings in case of deviation)
• Graphical display: Historical data (temperature/humidity over time) can be visualized in Home Assistant Lovelace dashboards or Grafana
• Alerts: Set up push notifications when temperature or humidity limits are exceeded (e.g., frost danger, mold risk)

Software and updates

• OTA updates: Over-the-air firmware updates supported via Zigbee2MQTT (depending on the availability of new firmware from the manufacturer)
• Configuration: Full configuration via Home Assistant ZHA or Zigbee2MQTT
• Device support: Officially included in the Zigbee2MQTT database (model ZG-227Z, vendor HOBEIAN/Tuya), tested and working in ZHA

Physical and installation

• Dimensions: Ø 40 mm x 13 mm (compact round housing, similar to a large coin cell battery)
• Weight: Approx. 13 grams (including battery)
• Mounting: Self-adhesive 3M tape or can be placed freely on a flat surface
• Material: Plastic housing, lightweight and durable
• Ventilation: Small air hole in the housing for accurate humidity measurement and air circulation
• Pairing button: Reset/pairing button on the back (press for 5 seconds with the included pin for pairing mode)

Environment and durability

• Operating temperature: -10 °C to +55 °C (sensor remains operational within this range)
• Humidity (operational): 0%–99% RH
• IP rating: Not available (sensor is not water-resistant, for indoor use only)
• Durability: Battery life of up to 1 year minimizes maintenance frequency; low energy consumption

Performance and latency

• Reporting speed: Automatic update every 5 minutes; instant reporting upon detection of significant changes (temperature >±0.6 °C, humidity >±6%)
• Network latency: Zigbee 3.0 offers low latency (usually <1 second between reporting and receipt by the hub)
• Reliability: Stable connection within the Zigbee mesh network; sensor remains consistently connected (tested in Home Assistant ZHA)

Security and certification

• Zigbee certification: Zigbee 3.0 certified (interoperability with all Zigbee 3.0 hubs)
• Encryption: Zigbee 3.0 security layer (AES-128 encryption for secure communication)

Package contents

• 1x DIYANI ZG-227Z Zigbee Temperature and Humidity Sensor
• 1x CR2450 battery (pre-installed)
• Manual (installation is simple via ZHA/Zigbee2MQTT)

Warranty and service

• Warranty: Standard 2-year warranty via slimhuisje.nl
• Support: Technical support via slimhuisje.nl customer service; community support available via Home Assistant forums and Zigbee2MQTT GitHub

Documentation and resources

• Zigbee2MQTT device page: Official configuration and exposes (temperature, humidity, battery, calibration settings) can be found at zigbee2mqtt.io
• Home Assistant ZHA: Automatically recognized upon pairing; entities for temperature, humidity, and battery appear immediately

Use cases and applications

• Bedroom comfort: Monitor temperature and humidity to ensure a healthy sleeping environment (ideal: 16–18 °C, 40–60% RH)
• Mold prevention: Automatic alert or trigger ventilation in case of high humidity in basements, bathrooms, or laundry rooms
• Heating optimization: Control smart thermostat based on real-time temperature data from different rooms
• Greenhouse/plant monitoring: Climate monitoring for houseplants or small greenhouses (within operating range)
• Energy saving: Avoid excessive heating or cooling by using accurate climate information per room

Pros

• Excellent compatibility with Home Assistant (ZHA and Zigbee2MQTT) without extra configuration
• High accuracy (±0.3 °C, ±3% RH) for reliable climate automations
• Long battery life (up to 1 year) with battery status reporting for proactive maintenance
• Compact dimensions (Ø 40 mm) and lightweight (13 g) for flexible placement anywhere in the house
• Automatic reporting every 5 minutes + instant updates for significant changes

Cons

• No Matter support (Zigbee 3.0 only, requires Zigbee hub for use)
• No display on the sensor itself (temperature/humidity only visible via hub/app)
• Limited IP rating (not water-resistant, for dry indoor spaces only)
• Reporting interval not adjustable via ZHA (fixed at 5 minutes; can be adjusted via Zigbee2MQTT depending on firmware)

Frequently Asked Questions (FAQ)

Does the DIYANI ZG-227Z work with Home Assistant?

Yes, the sensor works perfectly with Home Assistant via ZHA (Zigbee Home Automation) and Zigbee2MQTT. Upon pairing, entities for temperature, humidity, and battery percentage appear automatically without extra configuration. The sensor reports current values every 5 minutes.

How long does the battery last?

The included CR2450 battery lasts about 1 year under standard reporting intervals (every 5 minutes). The actual life depends on ambient temperature, signal strength, and reporting frequency. Home Assistant shows the battery status, so you can replace it in time.

Which Zigbee protocol does this sensor support?

The ZG-227Z uses Zigbee 3.0, the latest and most compatible Zigbee protocol. This means the sensor works with all Zigbee 3.0 certified hubs, such as Home Assistant (with Zigbee coordinator), Homey Pro, SmartThings, and similar systems.

Does this sensor support Matter?

No, the DIYANI ZG-227Z has no native Matter support and only works via Zigbee 3.0. For Matter functionality, you need a Matter bridge or hub that can translate Zigbee devices (for example, via Home Assistant with Matter server integration).

What is the range of the sensor?

The Zigbee range is up to approx. 30 meters in open space between the sensor and hub. In a practical living environment (with walls and obstacles), the range is usually 10–20 meters. Zigbee repeaters (powered devices such as smart plugs) strengthen the network and increase the range.

Can I use the sensor for climate automations?

Yes, the sensor is ideal for automations such as controlling heaters, fans, or dehumidifiers based on temperature and humidity thresholds. In Home Assistant, you can easily build automations (e.g., fan on at >70% RH, heating up at <18 °C).

How accurate are the readings?

The sensor has a temperature accuracy of ±0.3 °C and a humidity accuracy of ±3% RH. This is accurate enough for most smart home applications, such as comfort monitoring, mold prevention, and heating control. Via ZHA or Zigbee2MQTT, you can set calibration offsets for even more precise readings if necessary.