digital display 0.36 inch 4V-30V DC voltmeter( 2 line )สีน้ำเงิน

digital display 0.36 inch 4V-30V DC voltmeter ( 2 line )สีน้ำเงิน description Power Supply Range: No need to supply power separately, directly use the measured voltage as the power supply, the scope is the same as above. The Highest Input: DC30.0V. Note: The input voltage is higher than 30V and may be permanently damaged! Allowable Error: 1%; (the error is 0.3V when it is greater than or equal to 10V; the error is 0.10 when it is less than 10V) Input impedance: > 100K ohms Working current:Blue Refresh Rate: about 300mS once Display Mode: Three 0.36" LED digital tube Display Color: Blue Lead Length: 15cm Dimensions: 23 x 15 x 10 mm, length x width x thickness (without mounting ears); With Mounting Ear Length: 33mm Mounting Hole: hole distance: 28mm, aperture: 2.8mm Working Temperature: -10C--- 65C