sen0658 pulling 50mA at 12V instead of documented "< 10 mA"

The tech specs Ultrasonic 9-in-1 RS485 Weather Sensor for Arduino | DFRobot Wiki says the “Working Current” is < 10mA, but when I measure it with my multimeter it shows it is pulling 50mA @ 12V.  

Is there some register I can poke to put it in a low-power mode?

FWIW the sensor is blinking red - Blinking red light on sen0658- DFRobot Forum