The Dragino CPL03 series will send periodically data every day as well as for each dry contact action. It also counts the contact open times and calculate last open duration. User can also disable the uplink for each open/ close event, instead, device can count each open event and uplink periodically. It supports open alarm feature, user can set open alarm for instant notice. The sensor supports Datalog feature, it can save the data when there is no network and uplink when network recovers. The Dragino CPL03 series is designed for outdoor use. It has a weatherproof enclosure and industrial level battery to work in low to high temperatures.It supports BLE con gure and wireless OTA update which make user easy to use. The Dragino CPL03 series is powered by 8500mAh Li-SOCI2 battery or solar panel with Li-ion battery, it is designed for long-term use up to several years.