Item Type: Battery Clip Connector_x000D_Material: ABS, copperPurpose: Used for experimental power connection, power connection line for various electronic products such as multimeters, instruments, alarms, blood glucose meters_x000D_Applicable Battery: 9V battery_x000D_Output Polarity: Red wire positive, black wire negative_x000D_Working Temperature: -20~50_x000D_Plug: Approx. 2.1mm / 0.1in 1These battary clip connectors are suitable for 6F22, 6HR61, 6LR61/6LP3146 type IEC batteries. 2Using high-strength plastic, flame retardant and anti-leakage, safety is guaranteed. 3These battery holder clip use copper wires, which have enhanced conductivity and stable performance. 4Used for experimental power connection, power connection line of various electronic products such as multimeters, instruments, alarms, blood glucose meters, etc. 5The output polarity of this battery clip connection cable is positive for the red wire and negative for the black wire.20 xBattery Plug Cord