Compact size, can be operated within a wide voltage range With positive and negative poles for easy installation Reliable timing accuracy with error under 1 6 digit display, from 1/10 hour to 99999.9 Applications: Dynamo, air conditioning, air compression equipment, etc This rectangular hour meter can be used for device where time is used to determine oil change intervals, service requirements or where there is a need to record hours operated Specifications: Voltage: AC100-250V Power Consume: 1W Dielectric Strength: 1500V / min Working Temperature: -40 C to +50 C Colour:Black Material:Plastics Package Contents: 1 * Hour Meter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.