Lightning event counter is used for testing the lightning event in a certain area. LEC-A: Counting accurately Sensitive response Stable capability, stronglyanti-jamming. Easy to install and use Can be used together with allkinds of lightning protectors and equipment. Voltage or current countingalternative is available. LEC-D: Long service life due to no battery need. Maintenance free. Counting accurately Sensitive response and wide lightning currentmeasuring range Easy to install and use, a simple insertionof the down conductor through the device. Can be used together with all kinds oflightning protectors and equipment. Record surge or lightning event from trigger threshold350A.