1. Product Overview
The Sato One-Touch Timer TM-22 is a versatile digital timer designed for various timing needs, from kitchen use to laboratory applications. It combines ease of use with practical features to enhance your daily tasks.

Image 1: Front view of the Sato One-Touch Timer TM-22. The timer features a clear digital display and control buttons.
Key Features:
- Automatic Reset Alarm: The alarm sounds for 5 seconds at the set time and automatically resets to the initial set time.
- Simple Operation: The primary key is for starting; no complex operations are required to stop the timer's alarm cycle.
- Dual Notification: Alerts users with both sound (70dB) and light.
- Drip-Proof Construction: Designed to resist splashes, making it suitable for kitchen environments.
- Multiple Mounting Options: Equipped with a magnet on the back for attachment to metal surfaces and a strap for hanging.
- Countdown and Count-up Functions: Supports both decreasing and increasing time measurements.
2. Setup
Battery Installation:
The TM-22 timer requires one AAA battery for operation. A battery is included with the unit.
- Locate the battery compartment cover on the back of the timer.
- Slide or unclip the cover to open the compartment.
- Insert one AAA battery, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Replace the battery compartment cover securely.
The timer should power on, and the display will show '00:00' or the last set time.
3. Operating Instructions
The TM-22 timer features both countdown and count-up functionalities.
3.1. Countdown Timer
This function allows you to set a specific duration, and the timer will count down to zero.
- Set Time: Use the 'M' (Minute) button and 'S' (Second) button to adjust the desired countdown duration. The timer can be set from 1 second up to 99 minutes and 59 seconds.
- Start Countdown: Press the 'START' button to begin the countdown.
- Alarm Notification: When the time reaches zero, an alarm will sound for 5 seconds, accompanied by a flashing light.
- Automatic Reset: After the 5-second alarm, the timer automatically resets to the initial set time, ready for the next countdown without manual intervention.
- Pause/Stop: To pause the countdown, press the 'START' button again. To resume, press 'START' once more. To clear the set time, press the 'RESET' button (if available) or hold the 'START' button for a few seconds.
3.2. Count-up Timer
This function measures elapsed time from zero.
- Start Count-up: Ensure the timer display shows '00:00'. If not, press the 'RESET' button to clear any previous settings. Press the 'START' button to begin counting upwards from zero.
- Pause/Resume: To pause the count-up, press the 'START' button. To resume, press 'START' again.
- Reset: To reset the count-up timer to '00:00', press the 'RESET' button (if available) or hold the 'START' button for a few seconds while paused.
4. Maintenance
Cleaning:
To maintain the timer's appearance and functionality:
- Wipe the exterior of the timer with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or chemical agents, as these may damage the casing or display.
- The timer is drip-proof, but do not immerse it in water or expose it to heavy splashing.
Battery Replacement:
Replace the battery when the display becomes dim or the timer's functions become erratic.
- Follow the battery installation steps outlined in the "2. Setup" section.
- Always use a fresh AAA battery.
- Dispose of used batteries according to local regulations.
5. Troubleshooting
If you encounter issues with your TM-22 timer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer does not turn on. | Battery is dead or incorrectly installed. | Check battery polarity. Replace with a new AAA battery. |
| Display is faint or flickering. | Low battery power. | Replace the AAA battery. |
| Alarm is not sounding. | Volume obstruction or internal issue. | Ensure the speaker is not covered. Check battery level. If problem persists, contact support. |
| Timer does not reset automatically after alarm. | This feature is specific to the countdown function. | Ensure you are using the countdown function. For count-up, manual reset is required. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | TM-22 |
| Maximum Timing | 99 minutes 59 seconds |
| Minimum Timing | 1 second |
| Dimensions (H x W x D) | 67 mm x 93 mm x 20 mm |
| Weight | 96 g |
| Power Source | AAA battery x 1 (included) |
| Alarm Volume | 70 dB |
| Functions | Countdown, Count-up |
| Special Features | Drip-proof construction, Magnet on back, Hanging strap, Sound and light notification |
7. Warranty and Support
For warranty information, technical assistance, or customer support regarding your Sato One-Touch Timer TM-22, please contact your authorized retailer or the manufacturer, Sato Corporation. Keep your purchase receipt as proof of purchase.
Please visit the official Sato website for the most up-to-date support information and contact details.