Digital Frequency Meter Tachometer LED Display Frequency Meter Tester Counter Multi-function Meter 12V Power Underground Lights The emissivity is adjustable

The emissivity is adjustable

Recommendation: Width 15mm and thickness 0

Can be used to measure speed

1 x LED Rechargeable Flashlight

Digital Frequency Meter Tachometer LED Display Frequency Meter Tester Counter Multi-function Meter 12V Power Underground Lights The emissivity is adjustableShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Display mode: four digit red nixie tube Input impedance: 10K Input signal: high voltage 3 25v; Low level 0 2v; Sine wave or square wave signal Trigger delay: rise delay trigger Speed 1 9999 rpm Timing: 0 ~ 9999 seconds 0. 02fs Counting speed: 1000 CPS Sampling speed: 1sec The decimal point changes automatically according to the range ^_^: b121cf9e509a766e73dbd0fea4e889c3