Tzone Digital Technology Co., Ltd., established in 2006, is a leading hi-tech enterprise with experienced R&D team, production line, quality management and sales department. Our production procedure is fully complied with ISO 9001 standard with around 1500 square meters production scale. All products from Tzone are certified the CE, FCC, RoHs etc. Tzone is the temperature and humidity monitoring expert with over 50 employees. Our products include USB temperature data logger, wireless temperature receiver and sensor, LoRa/LoRaWan gateway and sensor and so on, which are widely used in laboratories, pharmaceuticals, medical, freezers, coolers, shipping containers, warehouses, environmental monitoring and food storage applications.