Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP 12V

YF-4 Digital Cycle Timer Relay Module – Adjustable DC 12V

12V
$26.38 $31.21
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Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP 12V
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP 12V
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP 12V
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
  • Digital Cycle Timer Relay Timer Relay YF‑4 Adjustable Cycle Delay Timer Relay Module Digital Display Timing Delay Board 12V HIP
YF-4 Digital Cycle Timer Relay Module – Adjustable DC 12V

YF-4 Digital Cycle Timer Relay Module – Adjustable DC 12V

$26.38 $31.21
Current Range12V

YF-4 Adjustable Cycle Delay Timer Relay Module – DC 12V Digital Display

Take precise control of your automated systems with the YF-4 Digital Cycle Timer Relay Module. Featuring a clear dual digital display and 6 versatile timing functions, this compact relay board lets you program delay-on and delay-off cycles from as short as 0.1 seconds all the way up to 999 hours — making it ideal for hobbyists, engineers, and DIY automation enthusiasts alike.

Made in Mainland China.

Key Features

  • 6 Built-In Timing Functions — covers delay-on, delay-off, single-cycle, and repeat-cycle modes to suit a wide range of automation needs
  • Dual Digital Display — simultaneous readout of T1 (delay ON) and T2 (delay OFF) settings for at-a-glance monitoring
  • Wide Timing Range — adjustable from 0.1 seconds to 999 hours via decimal-point position selection
  • 5A AC/DC Load Control — compatible with solenoid valves, water pumps, motors, LED/string lights, and more
  • 4-Button Interface — intuitive Setting, Increase, Decrease, and Confirm buttons for fast, accurate programming
  • DC 12V Input — reliable low-voltage operation for bench setups, control panels, and embedded projects

Function Modes

  • P1-1: Relay pulls in after T1 delay
  • P1-2: Relay releases after T1 delay
  • P1-3: Relay pulls in after T1, releases after T2
  • P1-4: Relay releases after T1, pulls in after T2
  • P1-5: Repeating cycle — pulls in after T1, releases after T2 (loops)
  • P1-6: Repeating cycle — releases after T1, pulls in after T2 (loops)

Timing Range Guide

Display Format Timing Range
XX.X 0.1 sec – 99.9 sec
XXX 1 sec – 999 sec
XXX. 1 min – 999 min
XX.X. 1 hr – 999 hr

Button Controls

  • Setting Button: Long press (2 sec) to enter function settings; short press to cycle through parameters
  • Increase Button: Increment time value
  • Decrease Button: Decrement time value
  • Confirm Button: Start / Stop timing

Specifications

  • Model: YF-4
  • Input Voltage: DC 12V
  • Max Load: 5A (AC or DC)
  • Timing Range: 0.1 sec – 999 hours
  • Display: Dual digital LED
  • Functions: 6 programmable modes

What's in the Box

  • 1 × YF-4 Cycle Timer Relay Module

Note: New and old hardware revisions of this module may be shipped interchangeably. Please confirm you are comfortable with either version before ordering.

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Frequently Asked Questions

Q: What voltage does the YF-4 cycle timer relay module require?

A: The YF-4 timer relay module operates on a DC 12V input, making it well-suited for low-voltage control panels, automation projects, and bench testing setups.

Q: What is the maximum load the YF-4 relay can switch?

A: The YF-4 can switch up to 5A of AC or DC load, allowing it to control devices such as solenoid valves, water pumps, small motors, and string lights.

Q: Can the YF-4 run in a continuous repeating cycle automatically?

A: Yes. Functions P1-5 and P1-6 provide fully automatic repeating cycle operation — the relay alternates between its pulled-in and released states based on your T1 and T2 delay settings, running indefinitely until stopped.

Q: How do I adjust the timing range on the YF-4 module?

A: The timing range is controlled by the position of the decimal point in the display. Selecting XX.X gives a range of 0.1–99.9 seconds; XXX gives 1–999 seconds; XXX. gives 1–999 minutes; and XX.X. gives 1–999 hours.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

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