1. Key Parameters
Input Voltage: 5V DC ±0.5V (Stable Regulated Supply Required)
Output Load:
DC Load: 10A Max @30V DC
AC Load: 5A Max @250V AC
Control Logic: 32 Preset Functions (Microcontroller-Based)
Trigger Signal: High Level (5V TTL Compatible)
Power Consumption: Static 20mA; Operating 60mA
Time Range: 0.01s–999min (Adjustable via Decimal Point)
Temperature Range: -25°C to +85°C (Reliable)
Memory Function: Power-Off Settings Retention
Dimensions: 65mm × 34.3mm × 17.5mm (DIN/PCB Mount)

2. Pin Functions
DC+: 5V Power Input - Connect to regulated 5V source
DC-: Power Ground - Common reference for all circuits.
IN+: Signal Input Positive - Accepts 5V high-level trigger (e.g., MCU/switch).
IN-: Signal Input Negative - Tie to GND if using single-wire trigger.
COM: Relay Common Terminal - Central contact for NO/NC switching.
NO: Normally Open Contact - Connects to COM when relay activated.
NC: Normally Closed Contact - Disconnects from COM when relay activated.

3. Frequently Asked Questions (FAQ)
Q1: Relay does not trigger despite correct power?

A:

Verify IN+ receives ≥3.5V signal; ensure DC- is grounded .
Add flyback diode across COM-NO for DC loads (e.g., 1N4007) .
Q2: How to set cycle modes (e.g., A→B→repeat)?

A:

Hold K1 for 2s → Select mode (e.g., P-44 for loop) → Short-press K1 → Set time A/B/C → K4 sets decimal (e.g., A=10.0s) .
Q3: LCD shows "Err" after power cycle?

A: Re-calibrate timing: Reset A/B/C values via K1-K4 keys; default mode = P-0 (single trigger) .