
Shelly Plus Add-on sensor & analog interface for Gen3/Gen4 relays
- Draws power directly from the host Gen3/Gen4 relay, so no separate power wiring is needed.
- Connects up to five DS18B20 temperature sensors or one DHT22 temperature/humidity sensor.
- Provides one analog input and one digital input for other sensor types.
- Uses a galvanically isolated sensor interface compatible with most Arduino-type sensors.
- Reads over the boat's own Wi-Fi/Bluetooth network and can be monitored through Schooner OS.
The Shelly Plus Add-on extends a Gen3/Gen4 relay on board with extra sensor inputs, so you can monitor bilge, cabin or engine bay conditions without installing a separate hub. It draws power from the host relay and connects over the boat's own Wi-Fi/Bluetooth network, working with any onboard router and readable by Schooner OS, no vendor hub required.
- Powered via the host Shelly Plus relay, no separate power supply needed.
- Supports up to five DS18B20 temperature sensors or one DHT22 temperature/humidity sensor.
- One analog input and one digital input for additional sensors.
- Galvanically isolated sensor interface, compatible with most Arduino-type sensors.
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