VMETER, a battery-free RFID voltage level monitoring tag

A full passive RFID tag that measures voltage level of the device connected to it with a 0V to 1.5V range. The VMETER-DCLV10 from Farsens S.L., San Sebastián, Spain, is a battery free RFID sensor tag capable of transmitting a unique identifier and the associated voltage level measurement data to a commercial EPC C1G2 reader without the need of a battery on the sensor tag. This device can measure voltages in a range from 0V to 1.5V with an adjustable gain of 1-1000.