Photoelectric Contact Dual Purpose Tachometer Original Customized Parts Boxes Excellent ABS texture of material，Delicate

Excellent ABS texture of material，Delicate and smooth，Safety and environmental protection

±(2%+2℃)

The carbon monoxide tester can detect the presence of carbon monoxide (CO) and measure 0-999 PPM concentration and alarm function are set

the clapboard can be adjusted up and

and steel wire inside

Photoelectric Contact Dual Purpose Tachometer Original Customized Parts Boxes Excellent ABS texture of material，DelicateShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Introduction: Can be used to determine the speed, linear speed or frequency, easy to carry, accurate measurement ^_^: 444d1ff9d38d504146c6afcdf8d0a831