General Description of 24V DC Cyclic Timer Relay

This 24V DC cyclic timer relay is a multifunctional programmable timer, ideal for automatic control of electrical devices such as pumps, fans, LED lights, heaters, or irrigation systems.
The module offers advanced functions of start delay, stop delay, and repetitive cyclic operation, and is easy to set using the digital display and intuitive menu.

The relay operates at 24V DC supply voltage and allows timing from 0 to 999 seconds, minutes, or hours. It is the perfect choice for simple automation, DIY projects, or periodic control of electrical loads.

Technical Specifications – 24V DC Programmable Timer

Supply Voltage:	24V DC
Relay Output:	1 channel (normally open contact, up to 10A)
Time Unit:	Seconds / Minutes / Hours (selectable)
Adjustable Time Range:	0 – 999 s/min/h
Cyclic Function:	Infinite loop or 1–999 cycles
Start/Stop Delay:	Supported
Trigger:	Automatic (default) or manual (via R button / external port)
Power Loss Memory:	Yes (saves settings)
LED OUT Indicator:	On = relay active, Off = inactive
Dimensions:	79.5 × 42.1 × 27.8 mm
Panel Mount:	77 × 39.3 mm
External Trigger Port:	Available (XH-2.45-2P, requires soldering)

Menu Functions (Codes P0 – P5)

Code	Value	Meaning	Default
P0	0 = seconds 1 = minutes 2 = hours	Time unit for the ON period	0
P1	0 = seconds 1 = minutes 2 = hours	Time unit for the OFF period	0
P2	ON / OFF	Priority for start or stop in the timing cycle	ON
P3	OFF = infinite N (1–999) = number of cycles	Number of ON/OFF cycles	OFF
P4	ON / OFF	ON = automatic trigger OFF = manual trigger	ON
P5	ON / OFF	Lock / unlock buttons	OFF

Step-by-Step Setup Guide

Press and hold the “S” button for 6 seconds to enter the programming menu.
Short press “S” to navigate between codes P0–P5.
Use “▲” and “▼” to adjust the values of each parameter.
Double-click “S” to set the ON time and then the OFF time.
If no button is pressed for 6 seconds, the settings are saved automatically.
In automatic mode (P4=ON), the cycle starts at power-on.
In manual mode (P4=OFF), press the “R” button to start the cycle.

Usage Examples

Repetitive cycle: ON = 10 seconds, OFF = 5 seconds → repeats continuously (P3=OFF).
Start delay: ON = 0, OFF = 10 seconds → device activates after 10 seconds.
Stop delay: ON = 10 seconds, OFF = 0 → output remains active 10 seconds after turning off.

Connecting the External Port

For external triggering, you can solder an XH-2.45-2P connector or connect wires directly to the designated pads on the board.
Buttons, sensors, or other trigger devices can be added for additional control.