Feature: 1. Industrial grade single chip microcomputer is used to control the time, with high accuracy and stable performance 2. With two adjustable resistors to adjust the time, the on-off time can be adjusted independently 3. Start timing by external contact activation and self‑reset button short circuit, convenient and fast 4. The start timer will short‑circuit the trigger and start the countdown when the power is turned on. If it is triggered again during the operation, the connection will be immediately disconnected. 5. The time range is divided into 0 ~ 100 seconds, 0 ~ 15 minutes, 0 ~ 30 minutes, 0 ~ 60 minutes, 0 ~ 120 minutes, 0 ~ 24 hours and other specifications, which can meet different needs Specification: Item Type: Delayed Circuit Module Ω Material: Resin Model: HCW-03 Typical Application Reference: 1. Time-limited working equipment, such as automatic power-off after 5 minutes each time a button is triggered 2. The machine repeats the test circuit, for example, power on for 1 minute and then power off for 1 minute. 3. The fish tank pump intermittently pumps water and oxygen 4. Other time control equipment . Package List: 1 x Delayed Circuit Module