3pcs RIDEN® 0-33V 0-3A Four Bit Voltage Current Meter DC Double Digital LED Red+Blue Display Volt Meterr Ammeter

Feature: Weight: 21g Display color: B: Red+Blue Display mode: Dual 0.28 LED digital 4 bit tube update rate: About 200 ms/time Physical size: 48 x 29 x 26 mm (L*W* H) Opening size: 45 x 26 mm (L*W) Supply voltage: 3.5-28V Lead wire length: 14 cm(Five wires) Measurement range: DC0.00-33.00V(voltage, Resolution 0.01v ) 0.000-3.000A(current, Resolution 0.001A) Operation temperature: -10 degrees~65 degrees Current measurement accuracy: (0.3% + 2words) Instruction of wiring: Red thin wire (VCC): Power input + 3.5-28V (NOTE: If the measuring signal is lower than 28V and have abundant power supply, it can be used as power supply for the module [black wire and yellow wire are contacted together to use]) Black thin wire(GND): Power input- Measurement signal - 3.5-28V Yellow thin wire (VIN): Measurement signal + (0-99.9V) Red thick wire (I+): Current input + (connect with load negative) Black thin wire(I-): Current input - (in series in power supply negative) Circuit Diagram: Voltage current meterin the measurement system for power supply System supply power-1 System supply power-2 Package included: 3 x 0-33V 0-3A Four Bit Voltage Current Meter