[Advanced Embedded MCU Chip]: This 220V digital temperature controller is equipped with an embedded central processing unit (MCU) chip, offering enhanced intelligence and reduced power consumption for efficient performance [Automatic Memory Retention]: Features built-in EEPROM storage within the MCU, allowing the device to automatically remember settings even after a power outage, ensuring seamless handling [High Precision Control]: Achieve temperature management with a control accuracy of 0.1°C, making it ideal for applications requiring exact temperature regulation [Adjustable Hysteresis Settings]: The controller allows for hysteresis settings starting from 0.1°C up to 15.0°C, providing flexibility in maintaining desired temperature ranges with decimal precision [PC Material Construction]: Constructed from robust polycarbonate (PC) material, this compact device measures 48.5mm by 40.1mm, ensuring durability and reliability in various environments Specification: Material: PCB Input: DC220V Temperature control range:-50-110°C Temperature measurement accuracy: 0.1°C Return Difference accuracy: 0.1°C Size Chart: 4.85cmx4.01cm/1.91inchx1.58inch Color: Green Package Contents: 1* Temperature Controller Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.