Current Input
Measurement range: 0 to 20 mA DC
Resolution: better than 1 µA
Measurement accuracy: ±20 µA
Input resistance: Approx. 100 Ω
Minimum current: 0 mA (open)
Maximum current: limited to approx. 40 mA.

Binary Input
Voltage contact parameters: "L" level input voltage: <0.8 V (*);
"H" level input voltage: > 2 V;
Minimum applicable voltage: 0 V;
Maximum applicable voltage: +30 V DC
Parameters for voltage-free contacts: Contact resistance in the "on" state: <10 kOhm;
Contact resistance in "off" state: >2 MOhm;
Contact voltage in "off" state: about 3 V;
Minimum state duration for locking state: 1s

General Technical Data
Operating temperature: -20 to +60 °C
Channels: 3 current inputs, 1 binary input
Total storage capacity: 500,000 values in non-cyclic recording mode; 350,000 values in cyclic recording mode
Recording interval: adjustable from 1 second to 24 hours
Display and alarm update: 1 second, 10 seconds, 1 minute adjustable
Data logging modes: Non-cyclic - stops logging when the memory is full; cyclic - the earliest data is overwritten with new data after the memory is full
Real Time Clock: Year, Year, Month, Day, Hour, Minute, Seconds
Battery: 3.6 V Lithium Ion, AA type
Protection level: IP20
Dimensions: 61 x 93 x 32 mm
Weight (including battery): approx. 120 g
Warranty: 3 years