RM-1501 Digital tachometerDetailed product description：

The RM-1501 digital tachometer has a five digit LCD display
Automatic shifting, ranging from 10.0 to 999999RPM
Measure distance 50~300mm
Contact and non-contact measurement methods
Reading range 0~99999
RS-232 Computer Connection Transmission (RM-1501)

Speed (non-contact)

	Gear position	resolution	accuracy
RPM	10.00-99999	0.01/0.1/1	0.04%±2dgtst
rps(HZ)	0.2-2000	0.001/0.01/01	0.04%±2dgtst

Speed (contact type)

scope	Gear position	resolution	accuracy
RPM/(/represents contact type)	20.00-29999	0.01/0.1/1	0.04%±2dgtst
m/min	2.000-2999.9	0.001/0.01/0.1	0.04%±2dgtst
ft/min	6.00-10000	0.01/0.1/1	0.04%±2dgtst
yard/min	4.00-3000	0.1/0.1/1	0.04%±2dgtst
rps(HZ)	0.4-500	0.001/0.01/0.1	0.04%±2dgtst

Average Count

Gear position	Maximum input frequency
0-99999	10KHz. and 5% pulse width

RM-1501 digital tachometer