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Model No.: GY-806
Features: GY-806 Volt Hour Meter can display the volt and record the working time together.
Model No.: RFBB2
Features: 1. Rechargeable emergency backup battery for digital products2. Laser light function3. With a USB output jack
Model No.: DJP-802
Features: Adopted lead-acid battery charge capacity and voltage display functions, It is best option for vehicle and equipment.
Model No.: DJP-805