IoT Products

CPH2-N is our Industrial NB IoT - Cat-M1 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: 0-14 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: 50,000+ Readings and 10,000+ 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


  • SIM Card Type: 4FF Nano-SIM, from any Network Provider
  • Firmware Update: Over The Air, Locally via Wireless Connectivity
  • Sampling Period: Configurable via downlink (default 4 hours)
  • Power Consumption: Power Saving: < 5uA, Transmission: < 220mA
  • Communication Standards: Cat-NB1 (NB-IoT), Cat-M1 (option of back support by GPRS)

  • Communication Bands: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B26/B28 and B39

  • Data Rates: Cat-M1: 375Kbps (DL)/375Kbps (UL) NB-IoT: 32Kbps (DL)/70Kbps (UL)

  • TX Power: 23dBm

  • Min Receiver Sensitivity: Cat-M1: -107dBm, NB-IoT: -113dBm

  • Antenna: Internal (Default)/ External (customised options available)

  • Optional Features: 

    • Attach without PDN (Packet Data Network)

    • Support for IPV6
    • SMS communication
    • Mobility support (Cat-M1 only)




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