ring RSDC4000 Manual Del Usuario página 23

POWER REQUIREMENTS
ATTENTION! Once there is no external power input, the battery cannot support
recording for a long time, please make sure power supply is connected when
recording.
Input voltage: 5V DC, 1.5A
Charging input voltage: 12-24V DC
Mini USB Connection for Power
OPERATING TEMPERATURES
Storage temperature: -20˚ C to 70˚ C
Operating temperature: -10˚ C to 60˚ C
(all models)