TM-4100 type digital tachometerDetailed product description：

TM-4100 digital tachometer

Screen display: 6-digit large LCD backlit display
Includes a set of contact and non-contact components (standard accessories)
Use red visible light source and reflective tape or reflector
Non contact measurement distance: 40~500mm (1.58 "~19.7")
Storage capacity: Manual data storage for 200 pieces of data
USB Memory Storage Pen Count: 20000 Pen (TM-4100D)
Digital tachometer TM-4100 product specifications
General electrical specifications
Screen display with 6-digit LCD display
Automatic range switching
Detection range: 5cm to 50cm
Sampling period of 62.5 milliseconds to 2 seconds (depending on usage conditions)

TM-4100 digital tachometer measurement range:
Measurement range (non-contact, AVG=ON)
[Speed r/s] (0.5000~1.9999)~(200.0~1600.0)
[Cycle ms] (0.6000~1.9999)~(200.0~1999.9)
Measurement range (contact, AVG=ON)
[Period m/m] (1.500~19.999)~(200.0~1999.9)
[Cycle ms] (0.0250~1.9999)~(20.00~33.30)

Only linear velocity measurement	For the above accuracy, ± 0.5% rdg needs to be added
Display update rate	About 0.5 to 10 times per second
function	Maximum/minimum value display, holding display, average display, automatic power-off for power saving, buzzer, backlight function
Working temperature and humidity	0 ° C to+40 ° C. 25% to 75% RH
Storage temperature and humidity range	-10 ° C to+60 ° C. 0% to 80% RH
Power supply	9V battery
DC 9V(1A)	(Purchase)
Maximum rated power	0.5VA
Output resistance	1KΩ
Earphone jack diameter	3.5mm
AC/PULSE output voltage	0 to 3.3 V
Continuous working hours	About 24 hours (TM4100), the buzzer will turn off
size	186x70 x36 mm（L x W x H）
weight	About 200g
Attachment	9V alkaline battery x 1, carrying case x 1, reflective tape x 1 sheet (30pieces/12mm (0.47in) x 12mm (0.47in) per piece)

TM-4100 digital tachometer