DF556 Pressure Liquid 

Level Sensor

DF556 is a pressure-based liquid level sensor, with wireless transmission module and battery.

With a submerged pressure transducer, DF556 can acheive 0.5% accuracy of the liquid height. The standard measurement range is up to 2.5m.  For other cable length, please contact our sales.

It is integrated with wireless module like NB-IoT, LoRaWAN, Sigfox, CAT-M, GPRS, 4G-LTE and etc. Data is uploaded to cloud server in protocol TCP, MQTT, LoRaWAN or other customized protocol. Widely applicable for liquid tanks, sewage, industrial water, pool, rivers and etc. 



Liquid Level Detection 

Wireless Transmission

Remote Monitoring

Low Power Consumption

IP67 Waterproof 

Easy Installation 

                              Network Diagram


Users can check data Dingtek’s software application or your own applications. 

Dingtek will provide protocol and manual without signing NDA after you place order.



Liquid level accuracy : 0.5%FS

Resolution : 1mm

Dimension : 122*96*96mm(Body),  140*30*30mm(Pressure part). 

Cable Length : 2.5m (Customizable)

Weight: 820g

Color: Blue (body), Silver (pressure part). 

Material : ABS(body), 304#stainless steel (pressure part),                  PTFE (cable between pressure part and body). 

Temperature range : -30℃ to 85℃

Internal Battery : Non-rechargeable Lithium Thionyl Chloride Battery,   ER26500*1,8500mAh@ 3.6V 

Wireless Option : NB-IoT / LoRaWAN / Sigfox / 4G-LTE / NB-IoT+Cat-M+GPRS.