Module for voice and data transmission (M2M/IoT)

Compact VoLTE-capable voice and data module for the North American market.


  • Microphone input and speaker output for using the system as a retrofittable handsfree solution
  • Control via 6 digital inputs and outputs (I/Os)
  • Mobile phone networks: UMTS (3G): 850, 1900 MHz; LTE: 700, 850, 1700, 1900 MHz; UMTS, LTE, VoLTE
  • Configuration with AT commands via COM port, USB, SMS or MQTT
  • Emergency call function (call 112/911)
  • SMS capable
  • Concatenated SMS (up to 4 x 160 characters per message)
  • Web configuration via (Link)

Application Range

  • Mobile and stationary applications

Scope of delivery

  • Connection diagram plan
  • Voice and data module PTVoiceBox 4G (NA)
  • Power supply cable


DimensionsWidth 96 mm (72 mm w/o retaining tabs), Length 133 mm, Height 25 mm 
Weight143 g (5.0 oz)
Operating voltage10 to 32 V
PowerOff: < 0,07 W; Standby: approx. 1,5 W to 3 W (depending on the connected accessories)
Current consumptionmax. 2 A (with hands-free)
Transmission powermax. 2 W at 850/900 MHz; max. 1 W at 1800/1900 MHz
SIM card slotMini SIM (2FF)
Storage temp.-30 °C to +80 °C (-22 °F to +176 °F)
Operating temp.-20 °C to +70 °C (-4 °F to +158 °F)
Antenna connectionFME (Antenna not included)
Data transferMini USB connection
I/OConnection ports for I/O cable kit, max. current rating: 150 mA per connection; electric strength: 32 V
MicrophonePlug: Molex 5557; Sensitivity: 700 mV/Pa (-3 dBV/Pa ± 3 dB) at 8 V/680 Ω
SpeakerPlug: 2-pole Molex (supply cable)
Power supplyVia supply cable (permanent plus, ground, ignition)
InterfacesRS232 with V24 level, USB 2.0