This temperature controller has digital display with backlight, clear definition, clearly displayed data, display adapts to environmental changes and is easy to read. Precise temperature control, temperature control ranges from -40 to 110, and with 0.1 temperature control accuracy. The built-in 30A high-current relay with 110-220VAC power output does not distinguish between zeroline and fireline and is suitable for all AC powered devices. Two models are available, you can choose the XY-SA30 or XY-SA30-W model depending on your needs, the XY-SA30-W comes with mobilephone APP control and WiFi capabilities. XY-SA30-W Only: WiFi Networking Control: Real-time communications, external network remotely control, unlimited distance alert notification, cloud recording, remote firmware upgrade. Computer web control, cellphone APP control, support for Android and iOS system. Cellphone APP Control: Automatic mode, with emergency stop function can be implemented to work for a specified period of time; Manual mode, the product transforms into an intelligent time-controlled switch that supports timer, time-delay and cycle. Specifications: Name: Temperature Controller Material: plastics Input voltage: 110-220VAC Output voltage: 110-220VAC Temperature control ranges: -40 to 110 Max power: within 4000W Item size: 79 * 43 * 25mm / 3.11 * 1.69 * 0.98in Package size: 100 * 80 * 50mm / 3.94 * 3.15 * 1.97in Package weight: 99g / 3.49ounce Packing List: 1 * Temperature Controller