The Multifunction Timer Counter Frequency is a multipurpose tool ideal for precise measurement and tracking in laboratory environments. It can time events down to 0.1 milliseconds and calculate frequencies and rates, but it does not have the capability for Geiger counting. Two modes (Timing, Counting/Frequency) with selectable functions by LED indication. Features: All press button operation with LED indication of functions. Memory items can be selectively deleted to remove errors. Memory items can be scrolled, totaled or averaged. Start/Stop TIME sockets also operate as remote Start/Stop sockets when running in COUNT or FREQUENCY modes. Brand: IEC Display: LED, 6-Digit Dimensions: mm (L) x mm (W) x mm (H) Weight: kg Memory: 20 readings Modes: Timing, Counting/Frequency Timing: 99.9999 seconds by 0.0001s; autoranges to 999.999 seconds by 0.001s. Accuracy: 0.01% +/-1 Product Code Voltage Dims (lwh) Weight Manual SE.LB4063-001 12V AC/DC 225x107x35mm 0.70 kg See Here SE.LB4063-101 240V AC 240x140x110mm 1.4 kg See Here