1-Channel Relay Module, Trigger Time Delay, Adjustable 6–30 V (OT3565)

Compact time relay for precise on/off delays. Suited for automation, home projects, and test rigs. Optocoupler isolation for strong noise immunity. Settings are retained.

Key features

• Supply voltage: 6–30 V DC

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

  • Signal GND and system GND are isolated for EMI robustness

  • Can be tied together if required (common ground)

• Relay switching capacity:

  • DC ≤30 V, max 5 A

  • AC 220 V, max 5 A

• Isolation: optocoupler

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

• Memory: parameters persist

• Dimensions: 63 × 38 × 15 mm

Terms

• OP: on-time (relay energized)

• CL: off-time (relay de-energized)

• LOP: cycle count 1–999, “—” = unlimited

Operating modes

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

• P1.1: retrigger during OP is ignored

• P1.2: retrigger during OP restarts OP

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

P2 – off/on delay after trigger

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

P3.1 – cyclic after trigger

• Trigger → OP → CL → repeat per LOP

• New trigger stops the cycle

P3.2 – cyclic without trigger

• On power-up run OP → CL → repeat per LOP

P4 – signal hold

• Relay stays on while the trigger is present

• When the signal disappears: start OP, then turn off

• If a new signal arrives during OP, the timer clears

Setup

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

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

3. Time scale: in parameter view press STOP to move 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: in main screen press STOP to toggle relay ON/OFF.

• Sleep mode:

  • C-P: display off after 5 min idle

  • O-d: display always on

  • Toggle: hold STOP 2 s.

Wiring and safety

• Relay contact is passive; external supply required.

• 1 channel, simple on/off control.

• Keep load within rated voltage and current.

• Observe polarity and provide cooling at higher currents.