Introduction: GY-4 digital Fruit Sclerometer which is to measure the hardness of apples, pears, strawberries and grapes, etc. It is a suitable instrument for fruit company, fruit farm, fruit research institutions to test the ripeness of fruits. With compact size, low weight and ocular reading, it is suitable to use on the scene. It also can be applied with its matched test stands (HPA Test Stand) to improve the accuracy. Note: the stand used for GY-4 is HPA Test Stand. Specification: Model:GY-4 Remark : Digital fruit Penetrometer Load Limit: 1-50kgs(optional) Load Resolution: 0.01kg Accuracy: ±0.5% Unit: N, kg, lb, Interface: RS-232-USB Battery: Ni-Hi 7.2V 1800mAh(not included) Power Supply: Input110~240V 50-60Hz 200mA Output9.4V 600mA Sensor: High precision sensor Working Temperature: 5°C~35°C Transporting Temperature: -10°C~60°C Comparative Humidity: 15%~80%RH Working Environment: No shaking and no causticity Pressure Diameter:3.5mm 8mm 11mm Pressure Depth: 10mm