Device catalog
Meters and sensors the Synacl ESP32 gateway reads out of the box. Pick one in the app and its register map, scaling and connection defaults are filled in — and every entry is a page here you can check against the datasheet.
Energy meters
Eastron SDM120-ModbusModbus RTU (RS-485)Datasheet-derived
Eastron · Single-phase DIN-rail kWh meter with Modbus RTU over RS-485, common on sub-metering and solar installs. This entry reads the live electrical values p…
Eastron SDM230-ModbusModbus RTU (RS-485)Datasheet-derived
Eastron · Single-phase 100 A DIN-rail kWh meter with Modbus RTU over RS-485 — the bidirectional big brother of the SDM120, popular for solar import/export mete…
Eastron SDM630-ModbusModbus RTU (RS-485)Datasheet-derived
Eastron · Three-phase DIN-rail kWh meter with Modbus RTU over RS-485, the standard choice for panel and feeder metering. This entry reads per-phase voltage, cu…
Peacefair PZEM-004T v3.0Modbus RTU (RS-485)Datasheet-derived
Peacefair · The hobbyist single-phase AC energy monitor: a PCB with a split-core CT, sold with a TTL serial header. It speaks Modbus RTU, so through a TTL-to-R…
Environment sensors
BH1750 ambient light sensorI²CBench-verified
ROHM · The ubiquitous I²C light sensor breakout (GY-302 and friends), read through the gateway's generic I²C driver. It reports illuminance in lux from about 1…
Bosch BME280 temperature, humidity & pressureI²CDatasheet-derived
Bosch Sensortec · The standard three-in-one environmental sensor, read by the gateway's built-in BME280 driver — no register map to enter. Temperature in °C, r…
DS18B20 1-Wire temperature probe1-WireDatasheet-derived
Analog Devices (Maxim) · The classic waterproof stainless temperature probe, read over a single data wire by the gateway's 1-Wire driver. Good for tanks, pipes…
Sensirion SHT31 temperature & humidityI²CDatasheet-derived
Sensirion · A factory-calibrated digital temperature and humidity sensor with better accuracy than the DHT family, read by the gateway's built-in SHT31 driver.…
XY-MD02 (SHT20 RS-485)Modbus RTU (RS-485)Datasheet-derived
Generic (XY-MD02) · A low-cost boxed RS-485 temperature and humidity transmitter built around a Sensirion SHT20, sold under many brands as the XY-MD02. It repo…
Bench-verified = confirmed on real hardware by Synacl · Datasheet-derived = transcribed from the vendor datasheet, not yet confirmed on hardware — report a mismatch.
Missing a device? Ask for it — or add any Modbus RTU, I²C or 1-Wire device by hand; the catalog is a shortcut, not a limit.