IoT Products

CPH2-L is our Industrial LoRaWAN Operated Low Power pH, ORP and Temperature Sensor. It is designed to work in harsh environments and provide accurate measurements. Find out more at Ellenex.

Technical Specification


pH Sensor

●  Measurement Range: ~2-~14 pH 

●  Accuracy: ±0.1 pH

●  Resolution: 0.01 pH

ORP Sensor
●  Measurement principle: Combined electrode (ORP/reference)

Platinum tip, Ag/AgCI AgAgCl. Gelled reference

●  Measurement Range: -1000 to +1000 mV 

●  Resolution: 0.1 mV

●  Accuracy: ±2 mV

Temperature Sensor

●  Measurement principle: NTC

●  Measurement Range: 0 to+50 °C

●  Resolution: 0.01 °C

●  Accuracy: ±0.5 °C 

●  Storage Temperature: 0 to+50 °C


  • Power Supply: Built-in Replaceable Lithium Battery, External Power (option)
  • Rated Voltage: 3.6V
  • Battery Lifetime: 5,000+ Readings and 5,000+ Transmission
    (with UDP protocol/ more than 5 years for most of applications)

Physical Specification

●  Materials: Sensor Head: PVC, DELRIN, special pH glass, platinum, polyamide, cable: Coaxial armoured Polyurethane, Enclosure: POM 

●  Max. Pressure on Sensor Head: 5bar

●  Weight: ~900 (for 3m cable) g

• Protection Rate: IP66 and UV protected enclosure and IP68 sensor head


  • LoRaWAN® Version, Class: 1.0.2revB, Class A (Class C on request) 

  • LoRaWAN® Frequency Zone: AS923, EU868, US902-928, AU915-928 (other zones available on request)

  • LoRaWAN® Activation Type: OTA (default), ABP

  • Sampling Type: Periodic (default), Event triggered

  • Sampling Period: Configurable via downlink (default 4 hours)

  • Transmission Type: Per sample (default), Event triggered, Conditional

  • Parameter Configuration: Over-the-air via LoRaWAN® downlinks, Locally via wireless connectivity

  • Firmware Update: Locally via Wireless Connectivity, Over The Air



ISDN » W-Lan


Environment » Temperature Range » Industrial (-25°C / +65°C)