Check the listing for details. ACS-100A Refrigerant Scale, Digital Electronic Refrigerant Charging 2023 Update. Condition: New. Listed at 109.99 USD. Product DescriptionWaterproof Design New Upgraded Rubber Scale Surface Quick Start Guide 1. Press the "ON/OFF" button on the hand-held device.2. Press "UNIT" to select the proper unit.3. Press “Z/T" to zero ( tare ) the scale. Press ‘’LAMP'' to turn on/off the backlight.4. Place the object to be weighed until the icon STABLE appears stably.Tailor-made For HVAC Engineers Technical Specifications High capacity 220lbs.(100kg) Accuracy +/- 0.5% of reading Resolution 5g /0.010lbs./0.25oz. Power 9V battery (not included) Three display modes kgs, lbs, and oz. Operation temperature 32°F to 113°F (0°C to 45°C) Weighing Platform 9" x 9" Weight 2.485kg(5.47OZ) Package Information 1 x Refrigerant Scale, 1 x Carrying Case, 1 x Manual Instruction