IoT Controller Features: Multifunctional controller specially designed for IoT eraSupport 4-way Wiegangd input, 4-way door sensor, 4-way exit switch, 8-way relay outputSupport 8 digital inputs, 8 analog inputs, 1 RS485, 1 RS232, 1 USBSupport 1 channel digital microphone, 1 channel speakerSupport smoke sensor , overflow sensor, weight sensor, vibration sensor, infrared sensor, gas sensor and other sensorsMain frequency 1.8G, supports hardware acceleration, comes with ISP image dedicated chipSupport MQTT IoT communicationStandard Ethernet communication, optional WiFi/2G/4G/5G communication