TRM01 Delay Relay Module adopts high-quality components and has stable performance and simple operation. It could be widely used in a variety of control situations that require delay self-locking. The module is preset with 4 functions to meet a variety of application needs, and can customize and add other specific functions as user needs. Features:1. With delay ON, delay OFF, self-locking and trigger delay function. 2. With power supply anti-reverse function to prevent damaging the module. 4. The delay time can be arbitrarily set between 0.1 seconds and 120 seconds. 5. The parameters can be saved, and the setting contents are not lost when power off. Specification:Working current: <80mA at 5V (<1mA when the relay is not operating) <35mA at 12V <1mA when the relay is not operating) <18mA at 24V (<1mA when the relay is not operating) Load capacity: Working temperature: -20~60 (limit range -30~70)Size: 60*35*20mm / 2.36*1.38*0.79in Package weight: Approx. 23g Module function:The user can select one of the following four functions by pressing the button. The delay time can be selected by adjusting the potentiometer. The delay time T1 can be adjusted between 0.1 second and 120 seconds. Function F1: Power-on delay pull-in: After the delay of T1 from the start of power-on, the relay pulls in and sends a high-level pulse signal to the X1 interface at any time. This function resets and restarts. Function F2: The power-on delay is disconnected: the relay is closed when the power is turned on. After the T1 time is closed, the relay is disconnected, and a high-level pulse signal is given to the X1 interface at any time. This function is reset and restarts. Function F3: Self-locking relay mode: a high-level pulse signal is sent to the relay X1 interface, the relay is closed, and a high-level pulse signal relay is turned off. Function F4: Level trigger mode: When the power is turned on, the relay is disconnected, and a high level signal is sent to the X1 interface. The relay immediately picks up. After the X1 port signal disappears, the relay still pulls in. When the pull-in time T1 arrives, the relay turns off. Module interface: 1. DC+: DC power supply positive 2. DC-: DC power supply negative 3. X1: input signal detection interface Relay load output has 3 wiring terminals. 1. COM: relay common interface 2. NO: relay normally open interface 3. NC: relay normally closed interface Package list:1 * Delay Timer Relay .