1. Introduction
This manual provides detailed instructions for the YWBL-WH DC 5V-36V Programmable Timer Module. It covers product features, specifications, setup procedures, operating modes, parameter settings, and general maintenance. Please read this manual thoroughly before operating the module to ensure correct and safe usage.
2. Safety Information
- The module incorporates a 'STOP' emergency stop button and reverse input protection for enhanced safety.
- Always ensure correct wiring and power supply within the specified voltage range (DC 5V-36V) to prevent damage to the module or connected equipment.
- Disconnect power before making any wiring changes or maintenance.
- Do not expose the module to extreme temperatures, moisture, or corrosive environments.
3. Product Overview
The YWBL-WH Programmable Timer Module is a versatile device designed for precise timing control in various applications. It features a digital LED display for clear parameter visibility and user interaction. Utilizing dual MOSFET parallel output technology, it offers low internal resistance, supporting currents up to 15A and power up to 400W. This design ensures silent, spark-free operation, making it suitable for high-frequency tasks. The module is compatible with a wide range of DC equipment, including motors, lamps, LED strips, micro-pumps, and solenoid valves.


4. Specifications
| Feature | Description |
|---|---|
| Manufacturer | YWBL-WH |
| Model Number | YWBL-WHg1sdcamxho |
| Input Voltage | DC 5V-36V |
| Output Current | Up to 15A |
| Output Power | Up to 400W |
| Material | Metal, Plastic |
| Dimensions (L x W x H) | 60mm x 34mm x 12mm (approx.) |
| Number of Parameters | 4 (OP, CL, LOP, Timing Range) |
| Timing Range | 0.1 seconds to 999 minutes |
| Safety Features | Emergency stop, reverse input protection |

5. Components and Controls
The module features a 3-digit LED display and four control buttons: STOP, SET, UP, and DOWN. The LED display shows current mode, time values, and other parameters. The buttons are used for mode selection, parameter adjustment, and stopping operations.

6. Setup and Wiring
Connect the module according to the diagram below. Ensure the input power (DC 5V-36V) is correctly connected to the 'VIN' and 'GND' terminals. The trigger signal (DC 3-24V) connects to the 'SIGN' and 'GND_T' terminals. The load should be connected to the 'OUT+' and 'OUT-' terminals, ensuring the load's power supply is within the module's operating range.

7. Operating Modes
The module supports several operating modes, each designed for specific timing applications. Understanding these modes is crucial for proper configuration.
7.1. Mode Selection
- Power on the module. The display will show the current working mode (default P1.1), then enter the main interface (displaying 000).
- Press and hold the SET button for 2 seconds to enter the mode selection interface.
- Use the UP and DOWN buttons to select the desired mode (P1.1 to P-4).
7.2. Mode Descriptions
- P1.1: Trigger signal. The relay turns ON for the 'OP' time, then OFF. If triggered again during the 'OP' time, the signal is ignored.
- P1.2: Trigger signal. The relay turns ON for the 'OP' time, then OFF. If triggered again during the 'OP' time, the timing resets.
- P1.3: Trigger signal. The relay turns ON for the 'OP' time, then OFF. If triggered again during the 'OP' time, the timing resets, the relay turns OFF, and timing stops.
- P-2: Trigger signal. The relay turns OFF for the 'CL' time, then ON for the 'OP' time, then OFF after timing.
- P3.1: Trigger signal. The relay turns ON for the 'OP' time, then OFF for the 'CL' time, and cycles. If triggered again during the cycle, the relay turns OFF, and timing stops. The number of cycles ('LOP') can be set.
- P3.2: No trigger signal after power-on. The relay turns ON for the 'OP' time, then OFF for the 'CL' time, and cycles. The number of cycles ('LOP') can be set.
- P-4: Signal holding function. If a trigger signal is present, timing resets, and the relay remains ON. When the signal disappears, after the 'OP' time, the relay turns OFF. If another signal is triggered during timing, timing resets.

8. Parameter Settings
Parameters such as 'OP' (on-time), 'CL' (off-time), and 'LOP' (number of cycles) are independent but common across modes. For example, if 'OP' is set to 5 seconds in P1.1, it will also be 5 seconds in P1.2.
8.1. Timing Range Setting
After setting the parameter value, press the STOP button to define the timing range:
- XXX.: The last decimal point lights up. Range: 1 second to 999 seconds.
- XX.X: The second to last decimal point lights up. Range: 0.1 second to 99.9 seconds.
- X.X.X.: All three decimal points light up. Range: 1 minute to 999 minutes.
For example, to set 'OP' to 3.2 seconds, select the XX.X range and set the display to 03.2.
8.2. Setting Parameters (OP, CL, LOP)
- Select the desired mode (e.g., P3.2) as described in Section 7.1.
- Press the SET button. The parameter to be adjusted will flash (e.g., 'OP' for on-time).
- Use the UP and DOWN buttons to adjust the parameter value.
- Press the STOP button to set the decimal point position, selecting the timing range (0.1 seconds to 999 minutes).
- Press the SET button again to move to the next parameter for the current mode (e.g., 'CL' for off-time, then 'LOP' for cycles). Repeat steps 3-4 for each parameter.
- Once all parameters are set, press and hold the SET button to save the settings and exit to the main interface.
- In the main interface, a short press of the SET button will display the current mode's parameter information for quick review.
9. Maintenance
- Keep the module clean and free from dust and moisture.
- Store in a dry environment when not in use.
- No specific user-serviceable parts are present. Do not attempt to disassemble the module beyond what is necessary for installation.
- Regularly check wiring connections for security and integrity.
10. Troubleshooting
If the module does not function as expected, refer to the following common issues and solutions:
- No Power/Display Off: Check power connections and ensure the input voltage is within the DC 5V-36V range. Verify power supply functionality.
- Relay Not Triggering: Verify the trigger signal connection and voltage (DC 3-24V). Ensure the selected operating mode is appropriate for your trigger logic. Check if the 'STOP' button is active (displaying 'OFF').
- Incorrect Timing: Recheck parameter settings (OP, CL, LOP) and the selected timing range (decimal point position) as described in Section 8.
- Module Not Responding to Buttons: Ensure you are following the correct sequence for mode selection and parameter adjustment as described in the 'Operating Modes' and 'Parameter Settings' sections. A quick power cycle might resolve temporary issues.
11. What's in the Box
The package typically includes:
- 1 x YWBL-WH DC 5V-36V Programmable Timer Module
Please check the product packaging for a complete list of included accessories.
12. Warranty and Support
For warranty information and technical support, please refer to the manufacturer's official website or contact your retailer. Keep your purchase receipt for warranty claims. The manufacturer strives to provide high-quality products and support.