SINOTIMER TM922

Contents

SINOTIMER TM922 Digital Programmable Timer Switch User Manual

Model: TM922

1. Introduction

The SINOTIMER TM922 is a versatile digital programmable timer switch designed for precise control of electrical appliances. It features a large LCD display, two independent relay dry contact outputs, and a detachable battery for memory retention. This manual provides detailed instructions for installation, operation, and maintenance.

Front view of the SINOTIMER TM922 timer switch
Figure 1: Front view of the SINOTIMER TM922 timer switch.

2. Specifications

Feature Specification
Brand Name SINOTIMER
Model Number TM922-K
Theory Digital
Type Mini
Use Timer Switch
Usage 7 Days Programmable
Programs 8 ON/OFF per Day
Combinations 15 Groups
Power Supply 85~265VAC 50/60Hz or 12VDC (model dependent)
Load Capacity Resistive 16A, Inductive 10A
Power Consumption < 5VA
Timing Range 1 second to 168 hours
Black-out (Memory Retention) 6 Years
Average Error < 2 sec/day
Temperature Range -10~50 °C
Humidity <95%
Battery Button battery CR2032 3V (Detachable)
Output 2 Channels (F1 and F2)
Dustproof Cover Yes
Dimensions 87*36*67 mm

3. Setup and Installation

The TM922 timer switch is designed for DIN rail mounting. Ensure power is disconnected before installation.

3.1 Physical Installation

  1. Mount the timer switch onto a standard DIN rail.
  2. Ensure the protective cover is securely in place after wiring.
Timer switch mounted on a DIN rail
Figure 2: TM922 mounted on a DIN rail.
Exploded view showing the protective cover and DIN rail clip
Figure 3: Detachable protective cover and DIN rail clip.

3.2 Wiring Diagram (TM922)

The TM922 model features two independent relay dry contact outputs (F1 and F2). Refer to the diagram below for proper wiring. Always consult a qualified electrician for installation if you are unsure.

Wiring diagram for SINOTIMER TM922
Figure 4: Wiring diagram for the TM922 timer switch. L and N are for power input. C1, 1, 2, 3 are for Channel 1 (F1) output. C2, 1, 2, 3 are for Channel 2 (F2) output. The diagram shows common (C), normally open (NO), and normally closed (NC) terminals for each channel.

Note: The power supply for the timer itself can be 85-265VAC or 12VDC depending on the specific model purchased. Ensure the correct voltage is applied to the L and N (or + and - for DC models) terminals.

4. Operating Instructions

The TM922 timer switch has a user-friendly interface with a large LCD display and intuitive buttons.

Video 1: Demonstration of basic operation, time setting, programming, sleep mode, and battery replacement.

4.1 Button Functions

  • MENU (PROG): Used to enter programming mode and navigate through settings.
  • Rst (Reset): Used for channel selection, entering sleep mode, and removing programs.
  • ▲ (Up): Used to increase values or navigate up in menus.
  • ▼ (Down): Used to decrease values or navigate down in menus.
  • OK (TIME): Used to confirm selections and set current time.

4.2 Current Time Adjustment

  1. If the display is locked, press and hold the MENU button for 3 seconds to unlock. The "LOCK" symbol will disappear.
  2. Press the OK button to select the minute, hour, second, and day of the week.
  3. Use the ▲ and ▼ buttons to adjust the desired values.
  4. Press OK again to confirm and move to the next setting, or to exit time adjustment mode.

4.3 Timer Program Setting (Two Independent Channels)

The TM922 allows for up to 8 ON/OFF programs per day for each of its two independent channels (F1 and F2).

  1. Press the MENU button to enter programming mode. The display will show "1 ON".
  2. Press OK to set the first ON time.
  3. Use ▲ and ▼ to adjust the hour, minute, and second. Press OK to move between time units.
  4. To select the days of the week for this program, use ▲ and ▼. You can choose individual days, weekdays, weekends, or various combinations (15 types available). Press OK to confirm.
  5. Press MENU again. The display will show "1 OFF".
  6. Repeat steps 2-4 to set the first OFF time for the program.
  7. Continue pressing MENU to cycle through "2 ON", "2 OFF", up to "8 ON", "8 OFF" for Channel 1 (F1).
  8. After setting programs for F1, the display will show "F2 1 ON" to indicate you are now programming for Channel 2 (F2). Repeat steps 2-7 for Channel 2.
  9. To exit programming mode, press MENU repeatedly until the current time is displayed, or wait for 30 seconds for it to automatically exit.

4.4 Channel Selection

While in clock status (displaying current time), press the Rst button to toggle between F1 and F2 channel display.

4.5 Working Status (ON, ON AUTO, OFF, AUTO OFF)

The timer has four working statuses. The timer will only operate automatically when in "ON AUTO" or "AUTO OFF" status.

  1. While in clock status, press the MENU and ▲ buttons simultaneously to cycle through the working statuses:
    • ON: Output is continuously ON, ignoring programs.
    • ON AUTO: Output is ON, and will follow programmed OFF times.
    • OFF: Output is continuously OFF, ignoring programs.
    • AUTO OFF: Output is OFF, and will follow programmed ON times.
  2. To set the working status for a specific channel (F1 or F2), first select the channel using the Rst button, then perform step 1.

4.6 Sleep Mode

To conserve power and turn off the LCD display:

  1. Press and hold the Rst button for 3 seconds. The LCD will turn off.
  2. To wake the LCD, press and hold the Rst button for 3 seconds again.

4.7 Lock Function

To prevent accidental changes to settings:

  1. Press and hold the MENU button for 3 seconds. The "LOCK" symbol will appear on the display, indicating the buttons are locked.
  2. To unlock, press and hold the MENU button for 3 seconds again. The "LOCK" symbol will disappear.

5. Maintenance

5.1 Battery Replacement

The TM922 uses a detachable CR2032 3V button battery for memory retention during power outages. If the display is dim or programs are lost after a power cut, the battery may need replacement.

  1. Carefully remove the protective cover.
  2. Locate the CR2032 battery compartment.
  3. Gently remove the old battery and insert a new CR2032 3V battery, ensuring correct polarity.
  4. Replace the protective cover.
Image showing the battery compartment of the TM922
Figure 5: Location of the detachable CR2032 battery.

5.2 Cleaning

Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.

6. Troubleshooting

  • Display is blank or dim: Check the power supply connection. If power is present, the internal CR2032 battery may need replacement.
  • Programs are not running: Ensure the timer is in "ON AUTO" or "AUTO OFF" mode. Check that the current time is set correctly. Verify that the programs are correctly entered and enabled.
  • Buttons are unresponsive: The timer may be in "LOCK" mode. Press and hold the MENU button for 3 seconds to unlock.
  • Timer loses settings after power outage: Replace the internal CR2032 battery.

7. User Tips

  • For critical applications, always test your programmed schedules to ensure they function as expected.
  • Consider using the "LOCK" function after programming to prevent accidental changes, especially in public or shared environments.
  • Regularly check the internal battery (CR2032) if the device is in an area prone to frequent power interruptions to ensure program retention.

8. Warranty and Support

For warranty information and technical support, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.

A PDF version of the user manual is available for download. You can find it at: SINOTIMER TM922 User Manual (PDF)


Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.