About this item: Smart Thermostat: Temperature range: -40 - 120℃, temperature control accuracy: ±1%. The thermostat switch can automatically switch between heating and cooling modes and control heating/cooling during operation by setting the start and stop temperature device. Multiple Functions: The LCD screen displays the temperature control mode and 4 timing modes F01-F04. It also features temperature correction, screen lock protection, and a memory function (all current settings are saved after power failure). Intelligent Time Control: This thermostat outlet senses temperature, adjusts the switch temperature, and offers cycle time control, on/off, and switching functions. Time range: 0-99 hours and 59 minutes, Time accuracy: up to 10 minutes. Maximum load: 16A (2), 3680W. 1.8m Temperature Sensor: The thermostat outlet comes with a 1.8m temperature sensor cable for connecting the measuring point; the temperature detection range is -40°C ~ +120°C. Multipurpose Device: This digital thermostat outlet intelligently controls temperature and time. It's widely used in greenhouses, aquariums, carbon crystal heaters, constant temperature switches, portable air conditioners, and smart aquaculture control, such as home wall heaters. Product Description: Specification: 1. Rated voltage: 230VAC 50HZ. 2. Rated load: MAX 16A 3680W. 3. Temperature range: -40~120 ℃. 4. Temperature control error: ±1%. 5. Temperature display resolution: 0.1°C. 6. Time error: Max 10 minutes. F01: Cycle Time Mode: Press the "MODE" button to switch to F01. Press the "SET" button to set the ON value (start hours/minutes) and OFF (hours/minutes off). The ON value is the system's running time, and the OFF value is the system's off time. This mode is the cycle time, which can control the system running intermittently. F02: Timing ON Mode: Press the "MODE" button to switch to F02. Press the "SET" button and set the hour/minute. In this mode, the system is controlled to operate at a specified time. For example, if CD ON is set to 30 minutes, the countdown starts, and the system automatically starts after 30 minutes. F03: Timing OFF Mode: Press the "MODE" button to switch to F03. Press the "SET" button and set the hour/minute. In this mode, the system is controlled to stop at a specified time. For example, if you set CD OFF to 30 minutes, the countdown starts, and the system automatically stops after 30 minutes. F04: Timer ON/OFF Mode: Press the "MODE" button to switch to F04. Press the "SET" button to set CD ON values (hours/minutes) and CD OFF values (hours/minutes). In this mode, the system is controlled to start and stop at set times. For example, set CD ON to 30 minutes, CD OFF to 40 minutes; the system starts working after 30 minutes and stops working after 40 minutes.