6. Continuous testing will cause the calibrator to heat up, so please pay attention to proper clearance time. To reduce failures and prolong battery life. 7. The output of the calibrator is divided into three grades: high, medium and low, which can be adjusted by the toggle switch on the head to adapt to the test of counters of different types or brands. 8. If the indicator light still does not shine after pressing the button for more than 3 seconds, it means that the battery needs to be charged. 9. Please do not disassemble the calibrator at will. If the capacity of the battery pack is obviously decreased or the charging efficiency is too low, it needs to be replaced. Please purchase a special battery pack from our company.1. Please charge before use. In order to ensure the charging effect and prolong the service life of the battery, a special charger should be used. It takes about 3-4 hours for an empty battery to be fully charged. The red light on the charger indicates charging; the green light indicates charging is complete. 2. According to the installation height of the counter, properly pull out the telescopic discharge rod. 3. Special grounding wire, with one end plug inserted into the jack at the tail of the calibrator and the other end clip connected to the ground. 4. Press the red button, turn on the high voltage for about 1 second, and the indicator light will light up (flash slightly). You can click on the connecting end of the counter and the lightning arrester for testing. 5. After each click, the end of the discharge rod should leave the counter. If you need to repeat the test, don't release the button. When the indicator light flashes again for 1-2 seconds, you can click the test again.1. Temperature: -40°C~+80°C; 2. Humidity: ≤90 (at an average of 25°C); 3. Non-flammable and explosive environment; 4. Not affected by sunlight, rain, etc.

Model	LH-RS/485
Discharge response	≥0.2kA (rising ≥8μs)
Counting interval	≥2s
External power supply	220V~
backup power	5~12V~/-
Electric power	≤0.5W
memory function	No data loss when power off
Clear the number of discharges	Long press (>8s)
Preset the number of discharges	Press (>0.5s) to lift up, accumulatively 1 time
Display range of discharge times	0~9999 number
Switch input 1 display	The first decimal point from the left, open circuit is not bright, closed circuit is bright
Switch input 2 display	The second decimal point from the left, open circuit is not bright, closed circuit is bright
Switch input parameters	Passive dry contact access, the access resistance is less than 200Ω
CPU work display	1st decimal point from right
CPU working status	Normal decimal point flashes
Data output	RS485 (Modbus communication protocol)
Working temperature zone	-40℃~+80℃
Wiring specifications	0.5mm2 ~1.5mm2
Shell material	Flame retardant plastic
External protection level	IP20
Product specifications and dimensions	2 switch positions (width 36mm)
Magnetic ring size	22mm x14mm x 8mm
Mounting brackets	35mm electrical rail