The Shelly Wave H&T is a battery-powered temperature and humidity sensor that communicates via the Z-Wave Long Range protocol, helping you maintain a healthy and hydrated indoor environment. Its elegant and compact design allows it to be placed anywhere, and the device features a long battery life (~1‑2 years with a CR123A battery). It integrates easily with any Z-Wave hub, supports automatic communication, firmware updates, and SmartStart functionality. This product is part of the Shelly Wave (Z-Wave) series and differs from the traditional Wi-Fi-based H&T family: it uses Z-Wave Long Range instead of Wi-Fi, making it compatible with a different smart home ecosystem.
About the Shelly brand
Shelly is best known for its smart home devices (relays, sockets, sensors) that offer high compatibility and support for open-source platforms (such as Home Assistant and Homey) via MQTT. Their product range includes wireless relays, Wi-Fi and Z-Wave protocol sensors, as well as various power monitoring and control modules.
Z-Wave® Protocol – Overview
The Z-Wave® protocol is an interoperable, wireless, radio-frequency-based communication technology designed specifically for control, monitoring, and status reporting in residential and light commercial environments. As a proven and widely adopted solution, Z-Wave® is the global market leader in smart control systems, offering affordable, reliable, and user-friendly products for everyday use. Interoperability has always been at the heart of the Z-Wave® protocol, featuring backward compatibility, robust security, and high reliability. Every Z-Wave® device can work within any Z-Wave® network with other Z-Wave®-certified devices, regardless of manufacturer or brand. Each mains-powered node in the network acts as a signal repeater—regardless of brand—enhancing network reliability. With over 4,000 certified Z-Wave® products and more than 100 million devices on the market, Z-Wave® technology has a 20+ year presence and offers advanced security features to make your home network smarter and more secure.
Main Product Features
- Humidity sensor: Precise humidity measurement to help prevent overly dry air or mold
- Temperature sensor: Accurate temperature monitoring for maintaining comfort
- Z-Wave Long Range technology: Over 400 m line-of-sight range with Z-Wave 800 chip and Security S2 support
- Battery powered: 1× CR123A battery, up to 2 years of operation
- SmartStart and OTA firmware: Easy network connection and automatic updates
- LED and button: Built-in status LED and S button for reset and pairing
Smart Home Protocols and Platform Compatibility
- Protocol: Z-Wave Long Range and classic Z-Wave support (868 MHz EU)
- Local control: Through a Z-Wave hub – a hub is required
- Factory compatibility: Works with all certified Z-Wave gateways (e.g. Homey, Fibaro, Aeotec, etc.)
- Security: Z-Wave S0/S2 (Authenticated) security protocols
- Integration: No MQTT – communicates via Z-Wave protocol
- Voice control: Not directly – remote control available via hub (e.g. Alexa, Google Assistant via compatible hub)
Smart Features
- Remote monitoring: Temperature and humidity data accessible via Z-Wave hub
- Notifications: Possible through hub automation (e.g. alert when humidity > 70%)
- Scene integration: Sensor data can be used as triggers in smart home scenes
- OTA updates: Automatic firmware updates via hub
- SmartStart: Simple setup – insert battery and activate with the button
Electrical Specifications
- Power supply: 3 V CR123A battery
- Battery life: Up to 2 years (depending on hub interaction)
- Inputs / Outputs: None – sensor-only module
- Power consumption: Ultra-low (< 70 µA in sleep mode)
- Power-independent: Operates solely on battery
Other Characteristics
- Compact, modern design
- Z-Wave 800 chip – low power consumption, extended range
- SmartStart and Security support for easy and secure network inclusion
- Wireless packaging – hub required for configuration
- Ideal for indoor use – helps prevent mold and dry air
