1-Channel Relay Module, Trigger Time Delay, Adjustable 6-30V

Compact time relay for precise on- and off-delay switching. Ideal for automation, home automation, and test setups. Optocoupler isolation for high interference resistance. Settings are retained.

Main features

• Supply voltage: 6–30 V DC

• Trigger signal: High-level 3.0–24 V DC

  • Signal GND and system GND are separated for better EMI resistance

  • Can be linked if desired (common ground)

• Relay switching capacity:

  • DC ≤30 V, max. 5 A

  • AC 220 V, max. 5 A

• Isolation: optocoupler

• Time setting range: 0.1 s to 999 min, continuously adjustable

• Memory: parameters remain stored

• Dimensions: 63 × 38 × 15 mm

Terminology

• OP: on-time (relay on)

• CL: off-time (relay off)

• LOP: number of cycles 1–999, “—” = unlimited

Operating modes

P1 – one-time delay after trigger (OP on, then off)

• P1.1: retriggering during OP ignores the signal

• P1.2: retriggering during OP restarts OP

• P1.3: retriggering during OP resets; relay off, timing stops

P2 – off/on delay after trigger

• Trigger → first CL (off), then OP (on), then off

P3.1 – cyclic after trigger

• Trigger → OP (on) → CL (off) → repeat according to LOP

• New trigger stops the cycle

P3.2 – cyclic without trigger

• After power-on directly OP → CL → repeat according to LOP

P4 – signal monitoring

• As long as the trigger signal is present, relay remains on

• When the signal disappears: OP starts and then switches off

• If a new signal arrives during OP, the time is cleared

Operation and setting

1. Select mode: hold SET for 2 s → select P1.1–P4 with UP/DOWN.

2. Parameters: short press SET → set OP, CL, LOP with UP/DOWN.

3. Time scale: in the parameter screen, short press STOP to select the decimal:

   • xxx → seconds (1–999 s)

   • xx.x → tenths (0.1–99.9 s)

   • x.x.x → minutes (1–999 min)

4. Save: hold SET to confirm and return.

Extra functions

• Emergency stop/manual control: in main screen, short press STOP to set relay ON/OFF.

• Sleep mode:

  • C-P: display turns off after 5 min inactivity

  • O-d: display stays on

  • Switch: hold STOP for 2 s.

Connection and safety info

• Relay contact is passive; requires its own power supply.

• 1 channel, only on/off function.

• Keep the load within the specified current and voltage.

• Pay attention to correct polarity and provide sufficient cooling at high currents.