Thông tin sản phẩm 5 digits 18mm (0.6") White backlight LCD - Accuracy: ±(0.05%+1 digit) - Sampling Time: 0.5 sec(over 120RPM) - Range Select: Auto-Ranging - Memory: Max. value, Min. value, - Last value. Can store 96s data. - Time Base: 6MHz Quartz crystal - Detecting Distance: 50~500mm - Measuring Range: - Photo Tach: 2.5~99,999RPM - Contact Tach: 0.5~19,999RPM - Surface Speed: 0.05~1,999.9m/min Resolution: - Photo Tach: 0.1RPM(2.5~999.9RPM) - 1RPM(over 1,000RPM) - Contact Tach: 0.1RPM(0.5~999.9RPM) - 1RPM(over 1,000RPM) - Surface Speed: 0.01m/min(0.05~99.99m/min) - 0.1m/min(over 100m/min) - Battery: 4x1.5V AA Size Battery or to external - DC 6V Regulated power supply - Nhà sản xuất: CEM - Trung quốc