• Use: It works for DC 4-100V, mini size and easy to install, work great for checking voltage.
• Large display: 3-digit LED digital tube,  large numbers, quickly and easily read.
• Opening hole: The opening hole diameter is 30cm, easy to install.
• Reverse connect protection: It can be protective when connect the wire inversely or wrong.
• Compact design: It is compact, mini size and portable, easy to store and carry.
• Good quality: It is made from good quality plastic, which is durable, long lasting.

• Display color:  red
• Shell color: black
• Size: 3.38*3.38*1.8cm
• Wire length: 20cm
• Material: plastic
• Voltage: 4-100V
• Opening hole size: diameter 3cm
• Minimum start: 3.8V
• Permissible error:  ±1%
• Input impedance:  >100K ohms
• Working current: red <15mA
• Refresh rate: approx.. 300mS/time
• Display: 3-digit round LED digital tube
• Operating temperature: -10℃~65℃

Package includes:

• 1 x LED voltmeter