3pcs Blue Light Mini 0.36 Inch DC Current Meter DC0-999mA 4-30V Digital Display With Reverse Connection Protection Ammeter

Feature: Module name Current display module Measurement accuracy 0.10% Refresh rate About 200ms - times Display method Three digits 0. 36" digital tube Measuring range 0A-999mA Power supply range 4V-30V Working current Less than 8mA Display color Blue Storage temperature -10C to +65C Input resistance 50 milliohms Weight 10g Peripheral size 35*14*10mm Wiring diagram: - The ground wire of power supply end and measuring end of this ammeter adopts common ground design, that is, the ground wire of the power supply and test end is interlinked, so the test end of the ammeter can only be stringed after the household appliance (ie, Between the negative pole of the measuring device and the negative pole of the power supply of the device under test) - It is recommended that the power supply terminal of the meter head be powered by a single DU isolation. - The shunt must be connected to the circuit before use and then connected to the digital ammeter to prevent high voltage damage to the meter. Shared power supply under test DU isolated power supply Package includes: 3 x Meter