Model Number: Sm 8237 Brand Name: TLead Key Specifications/Special Features: Inductive type measure the engine speed by non-contactMeasuring the temperature cooling water in engine by contactTesting the rotate speed of multi-cylinder in same time or testing one of cylinder rotate speedTesting the rotate speed used to 2 stokes and 4 strokesCan set the cylinder in 2, 3, 4, 5, 6, 8, 12 or set the impulse of each rotation

Memorize the maximum value, minimum value and last value

Can record 300 testing data

Low power symbol automatic indicating

Yellow-green back light

°C and °F temperature switch function

Rotation speed range: 100-40,000RPM

Rotation speed resolution: 1RPM

Rotation speed accuracy: ±1r/min(100-11,999r/min), ±2r/min(12,000-19,999r/min), ±4r/min(20,000-40,000r/min)

Temperature range: 0-200°C

Temperature resolution: 0.5°C

Temperature accuracy: ±2°C