| Brand | Unbranded |
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Check the listing for details. 2.4in LCD Screen Internal Resistance Tester Built-in reverse protection. Condition: New. Listed at 52.99 USD. Heat Dissipation: U-shaped groove at the back is combined with PCB board, and the fan actively dissipates heat to form a heat dissipation channel. Heat Dissipation Mode: Active heat dissipation. Battery Reverse Connection Protection: Built-in reverse connection protection.