�?Maintenance instructions
1. Clean the surface of the protective sticker with dry and clean cloth (or soaked with cleaning oil) before using the caliper.
2. Never apply voltage or engrave with an electronic pen on any part of the caliper, for fear of damaging the circuit.
3. Press ON/OFF button to shut the power when the caliper stands idle; Take out the battery if it stands idle for a long time.
�?Technical specification
Resolution: 0.01mm
Power: One battery (1.5 v)
Measuring speed: �?.5 M/S
Working temperature: 0 �?40 °C
Relative humidity: < 80%
Storage temperature: -10�?60 °C
�?Function
1. Zero setting at any position, easy for relative measuring.
2. Metric/Inch system interchange ar any position.
3. With special interface, data can be input to your special printer or computer for processing and printing. Working way of the interface: synchronous series.
Data: binary code, 24 bits, each datum will be sent twice, the cycle is 300ms (20ms in fast reading state), transmitting time is 0.5ms.
Four wires: (from left to right) negative power (-), clock CP, data D and positive power (+).
Pluse range of data: level �?″≤0.2V, level �?″≥1.3V
Clock CP:90KHz, effective for high electronical level
�?Operation
1. Preparation: dry the surface of the protective sticker (refer to Maintenance instructions) and then clean the measuring faces.
2. Measuring:
(1) press ON/OFF button to switch on the power.
(2) press Metric/Inch button to select a desired unit system..
(3) press ZERO button to set zero.
(4) a normal measurement can be made.
�?Battery replacement
Abnormal display (digit flashing or even no display) shows a flat battery. Thus you should push the battery cover as the arrow directing and then replace with a new one. Please note that the positve side must face out. If the battery bought from market doesn’t work satisfactorily (the power may wear down because of the long-term storage or the battery’s automatic discharge, and etc.), please do not hesitate to contact the supplier.

�?Brief instructions on maintenance
Trouble Possible Causes Solutions
Flashing digits Low voltage Replace the battery
No Display 1. Low voltage
2. Poor contact 1. Replace the battery
2. Adjust and clean the battery seat
Fixed digits Accidental trouble in circuit Take out the battery and put it back after one minute