1. Introduction and Overview
The SINOTIMER TM922 is a versatile digital programmable timer switch designed for precise control of electrical devices. Featuring two independent relay outputs, it allows for flexible scheduling with up to 8 ON/OFF programs per day across 7 days a week. Its large LCD display provides clear visibility of time and program status. This manual provides detailed instructions for installation, programming, and operation to ensure optimal performance and safety.
2. Safety Information
Please read and understand all safety instructions before installing or operating this device. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure the power supply is disconnected before any installation or maintenance.
- Installation should be performed by a qualified electrician in accordance with local electrical codes.
- Do not expose the device to moisture, rain, or extreme temperatures.
- Verify that the load connected does not exceed the maximum current rating of the timer (16A resistive, 10A inductive).
- This device is designed for indoor use only.
- Keep out of reach of children.
3. Package Contents
Upon opening the package, please verify that all items are present and undamaged:
- 1x SINOTIMER TM922 Digital Programmable Timer Switch
- 1x User Manual (this document, or refer to the PDF version for more details)
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | TM922 |
| Brand Name | SINOTIMER |
| Type | Mini, Electronic |
| Origin | Mainland China |
| Certification | CE, RoHS, EMC, LVD |
| Power Supply Options | 85~265VAC 50/60Hz (Standard), 12VDC, 24VDC, 110VAC (Customized) |
| Load Capacity | Resistive 16A, Inductive 10A |
| Power Consumption | < 5VA |
| Timing Range | 1 second to 168 hours |
| Black-out (Memory Retention) | 6 Years |
| Programs | 8 ON/OFF per day |
| Combinations | 15 groups (e.g., daily, weekdays, weekends) |
| Average Error | < 2 seconds/day |
| Temperature Range | -10~50°C |
| Humidity | <95% |
| Net Weight | 0.19/0.22kg |
| Battery Included | Yes (3V) |
| Dustproof Cover | Yes |
| Dimensions | 87*36*67 mm |
5. Product Diagram and Controls
Familiarize yourself with the timer's display and buttons for easy programming and operation.
Display Elements:
- Days of the week (from 1 to 7): Indicates the current day.
- Time display: Shows current time (hour, minute, second).
- Channel Status F1, F2: Indicates the status of Channel 1 and Channel 2.
- Lock Button Status: Displays 'LOCK' when buttons are locked.
- AUTO OFF Timer Switch Status: Shows the current working mode (ON, ON AUTO, OFF, AUTO OFF).
Button Functions:
- MENU: Unlocks or locks buttons, enters program setting mode.
- UP (▲) / DOWN (▼): Increases or decreases values during setting.
- OK: Selects options and confirms settings.
- Res: Resets, selects channels, enters sleep mode, or removes programs.
6. Setup and Installation
The SINOTIMER TM922 is designed for DIN rail mounting. Ensure proper wiring according to the diagram below and local electrical standards.
Wiring Instructions:
- Connect the main power supply (L and N) to the INPUT terminals as indicated.
- For Channel 1 (C1), connect the load to terminals 4 (NO) and 5 (NC) or 4 (NO) and 6 (C) depending on your application.
- For Channel 2 (C2), connect the load to terminals 1 (NO) and 2 (NC) or 1 (NO) and 3 (C) depending on your application.
- Ensure all connections are secure and insulated.
DIN Rail Mounting:
- Attach the timer to a standard 35mm DIN rail by aligning the clip and pressing firmly until it clicks into place.
- To remove, pull the orange tab at the bottom and lift the timer off the rail.
7. Operating Instructions
This section details how to set the current time, program the ON/OFF schedules for both channels, and manage the timer's working status.
7.1. Lock Function
- To lock or unlock the buttons, press and hold the MENU button for 3 seconds. The 'LOCK' symbol will appear/disappear on the display.
7.2. Set Current Time
- Press the OK button to select the minute, hour, second, and day of the week.
- Use the UP (▲) and DOWN (▼) buttons to adjust the selected number.
7.3. Setting F1 Channel Programs
The timer supports up to 8 ON/OFF programs per channel. '11' means 1st channel, 1st program.
- Press MENU to enter the 1st program setting mode.
- Press OK to set the 1st ON time (second, minute, hour, week).
- Use UP (▲) and DOWN (▼) to adjust the values. Press OK to move to the next setting (e.g., from minute to hour).
- Press MENU again (or UP (▲)) to enter the 1st OFF program setting.
- Repeat steps 2-3 to set the 1st OFF time.
- Repeat steps 1-5 for additional ON/OFF programs (up to 8 per channel).
7.4. Setting F2 Channel Programs
Similar to F1 channel programming. '21' means 2nd channel, 1st program.
- From the clock status, press Res to switch to F2 channel.
- Follow the same steps as for setting F1 Channel Programs (7.3).
7.5. Switching Channels
- On the clock status screen, press the Res button to toggle between F1 and F2 channel displays.
7.6. Working Status
The timer has 4 working statuses: ON, ON AUTO, OFF, AUTO OFF.
- To change the working status, press the MENU and UP (▲) buttons simultaneously.
- The timer will only operate automatically when in ON AUTO or AUTO OFF status.
7.7. Sleep Mode
- To enter sleep mode (turn off LCD), press and hold the Res button for 3 seconds.
- To wake up the LCD, press the Res button again for 3 seconds.
7.8. Cancel Programs
- While in the timer setting status, press the Res button to cancel the existing program.
7.9. Instructional Video
For a visual guide on programming and operating the timer, please watch the following video:
Video: Demonstrates lock function, current time setting, F1/F2 channel programming, and working status changes.
8. User Tips
- Programming Complexity: Programming can be intricate. Take your time and follow the instructions step-by-step. The instructional video (Section 7.9) can be very helpful.
- Voltage Selection: Double-check that you have selected the correct voltage version (e.g., 12VDC, 85-265VAC) for your application before installation.
- Load Capacity: Always ensure that the electrical load you are connecting does not exceed the timer's specified resistive (16A) or inductive (10A) capacity to prevent damage to the device and connected equipment.
- Always-On Backlight: The backlight on this timer is designed to be always on when powered, which can be convenient for visibility without needing to press buttons.
9. Troubleshooting
- Device Not Powering On:
- Check all wiring connections to ensure they are secure and correctly matched to the power supply.
- Verify that the power supply voltage matches the timer's requirements.
- Ensure the main power source is active.
- Programs Not Activating:
- Confirm the timer is in ON AUTO or AUTO OFF working status (see Section 7.6).
- Review your programmed ON/OFF times and days for any errors.
- Ensure the buttons are not locked (see Section 7.1).
- Screen Always On / Backlight Cannot Be Turned Off:
- This is a normal operating characteristic for this model. The backlight is designed to be continuously active when the device is powered.
- Difficulty with Programming:
- Refer to the detailed programming steps in Section 7.3 and 7.4.
- Watch the instructional video (Section 7.9) for a visual demonstration.
- If still struggling, try resetting the device and starting the programming process again.
10. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: The timer includes a replaceable 3V battery for memory retention during power outages. If the time or programs are lost frequently, the battery may need replacement. Consult a qualified technician for battery replacement.
- Environmental Conditions: Ensure the timer is operated within its specified temperature (-10~50°C) and humidity (<95%) ranges.
11. Warranty and Support
For any issues not covered in this manual or for further assistance, please contact the seller or manufacturer directly. Keep your purchase receipt for warranty claims.
A detailed user manual in PDF format is also available for download. You can typically find this document on the product's purchase page or by searching for the model number on the manufacturer's website.
12. Frequently Asked Questions (FAQ)
- Q: Can the backlight on the 12V DC model be turned off?
- A: No, the backlight on this model is designed to be always on when the device is powered.
- Q: Is the screen always on, is that normal?
- A: Yes, for this timer, the screen is typically always on when it has power, which is normal operation.
- Q: Is it possible to set the language to Italian?
- A: The device's display primarily uses numbers and universal icons, not text-based language settings. The manual is provided in English.
- Q: Do you have a plug-in scheme please?
- A: Yes, a detailed wiring diagram is provided in Section 6 of this manual (Figure 4).
- Q: Does it have a pulse function?
- A: This model is designed for scheduled ON/OFF operations and does not explicitly feature a pulse function.