{{ :cs:hw:05-sensors:sd125c.png?direct&220|}}
* A variant for sumps (IP65 protection)
* Digital 1W sensor featuring the **DS18B20** chip
* Probe dimensions: u ⌀6* x 120 mm (±0,2 mm*)
* Plastic cover dimensions (**h** x **w** x **d**): 70 x 63 x 34 mm
* Temperature sensors are suitable for temperature measurements in the range of -10°C to 85°C. With reduced accuracy, the sensors can be used in a range of -40°C to 125°C.
* Head ambient working temperature: -30°C to 100°C
* Connection: shrouded terminal box
* Designed for 4-wire connection used on Unipi sensors and hubs
* Can be wired to the RJ45 connector for connection to the Extension xG18 or any Unipi unit via a suitable [[https://www.unipi.technology/cables-reductions-hubs-c41|splitter]]
* More info and tips regarding the sensor connection is available in the [[en:automation:02-glossary:1wire-hidden#rj45_connector_connection_for_unipi_1-wire|1-Wire article]]
* Link to e-shop: [[https://www.unipi.technology/1-wire-sump-temperature-sensor-with-a-head-p395|link]]
Examples of use:
* Measuring temperature of media in pipelines
* Suitable for measuring temperature in air conditioning ducts
Applicable for:
* All Unipi units with a 1W bus, including the Unipi 1.1/Lite
* With Unipi 1W hub and splitter
* Unipi Extension xG18
For connection to Unipi Patron or Unipi Neuron units, all you need to do is to interconnect the suitable terminals. For connection to Extension xG18, use a network cable (patch cord) with one of the connectors cut off. Alternatively, you can use a standard FTP/UTP cable with a crimped-on RJ45 connector. A connecting guide and more additional info is available in the article about [[en:automation:02-glossary:1wire-hidden#wire_bus_on_unipi_devices|1-Wire bus and connection of our sensors]].