RCW-600WiFi is a wireless temperature monitor based on Internet of Things technology, widely used in foodstuffs, catering, logistics and industries that require HACCP system certification. It can transmit data via Wi-Fi to Cloud platform. Users can view, manage and monitor data online remotely by browser or on smart phone application. It can send alarm reminders via Cloud and buzzer. The device has double temperature sensors. With a built-in rechargeable lithium battery, it provides real-time data uploading and platform alarm service even in case of cold storage power outage.