Features: - Digital display, easy to read. - Unit display: Lb, kg and N each switch. - Battery short circuit, leakage, overload, battery low battery indicator - the use of 3.7V lithium battery-powered, ten minutes no operation will automatically shut down. - Light weight, small size, accessories are a lot. Main features: - in line with tension and compression testing; - press and hold the SET button for 4 to 5 seconds release digital direction switch, easy to read data; - real-time, peak effective measure. Model Specifications SF-2 SF-3 SF-5 SF-10 SF-20 SF-30 SF-50 SF-100 SF-200 SF-300 SF-500 maximum load 2N 3N 5N 10N 20N 30N 50N 100N 200N 300N 500N 0.2 kg 0.3kg 0.5kg 1kg 2kg 3kg 5kg 10kg 20kg 30kg 50kg 0.45Lb 0.65Lb 1.1Lb 2.2Lb 4.5Lb 6.5Lb 11Lb 22Lb 45Lb 65Lb 110Lb load dividing the value of 0.001N 0.01N 0.1N 0.001kg 0.001kg 0.01kg 0.001Lb 0.001Lb 0.01Lb sensor structure built-in accuracy of ± 0.5% Power 3.7V lithium battery charging time 4 to 6 hours of battery time of about 15 hours of continuous use battery life ≥300 times Charger Input: AC 220V 50HZ Output: DC 5V 1000mA Operating temperature 5 ℃ ~ transport temperature 35 ℃ -10 ℃ ~ 60 ℃ Relative humidity 15% ~ 80% RH environment and corrosive media around without source