Power requirements

Protection: Power inputs are protected against surge, over-voltage, over-current, and reverse power. IEC 61000-4 Class 4 level.

Power In Terminal :

  • Input Voltage: 9.6 to 32 VDC
  • Input Current Limit at 12 VDC:
    • Total system current is fused at 5 A with replaceable automotive mini-blade fuse
  • Input voltage must be at least 0.3 V higher than the voltage required to charge the battery; 40 VDC sustained voltage limit without damage. Transient voltage suppressor (TVS) diodes at the Power terminals clamp transients to 19 to 21 V and 19 to 40 V respectively. Sustained input voltages in excess of 19 V or 40 V respectively can damage the TVS diodes.

Vehicle Power Connection: When primary power is pulled from the vehicle power system, a second power supply OR charge regulator may be required to overcome the voltage drop at vehicle start-up.

Internal Lithium Battery: 1/2AA, 1.2 Ah, 3.6 VDC (Tadiran L5902S) for battery-backed memory and clock. 5-year life with no external power source. See also Internal battery.

Average Current Drain:

  • Active: ~6 Watts
    • 24 V input: 255 mA input
    • 12 V input: 495 mA input

Wi-Fi Additional Current Contribution at 12 VDC:

Mode

Wi-Fi Option
Client Mode 7 mA idle, 70 mA communicating
Access Point Mode 62 mA idle, 70 mA communicating
Sleep (use IPNetPower() or DevConfig setting to disable) <1 mA