The RFVolt101A is a low level, DC Voltage data recorder with built-in, wireless (RF) transmitter. Featuring custom engineering units set through the software, any sensor that provides an analog voltage output signal can be monitored and recorded. Using the RFC101A receiver, this data recorder can transmit data up to 120 feet, line of sight. Built-in memory also stores data internally. Available in three voltage ranges. Note: Approved for use in the US and Canada only. Measurement Range: ±100mV 0 to 15V 0 to 30V Measurement Resolution: See Table Below Calibrated Accuracy (%FSR): ±100mV: ±0.01% 0 to 15V: ±0.1 0 to 30V: ±0.1 Memory: 8,191 readings Sample Rate: 30 seconds up to 12 hours LED Indicator: Red & Green Required Interface Package: RFC101A PC Baud Rate: 57,600 RF Carrier Frequency: 418 ±0.075MHz RF Baud Rate: 4800 Output Power: <0dBm typical (<1mW) Receiver Sensitivity (RFC101A): -90dBm typical Typical outdoors/line of sight: Up to 120' (36m) Typical indoors/urban line of sight: Up to 40' (12m) Approvals: US(FCC), CA(IC) Typical Battery Life: 1 year Material: ABS plastic Operating Environment: -30~+70°C; 0~95%RH non-condensing Dimensions: 1.7" x 2.7" x 0.8" plus 2.0" antenna (42mm x 69mm x 21mm + 51mm antenna) Weight: 2oz.