Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your MCR SINOTIMER TM919 Digital Programmable Time Switch. Please read this manual thoroughly before using the device to ensure correct operation and to prevent damage.
Safety Information
WARNING: Electrical shock hazard. Installation and servicing should only be performed by qualified personnel. Disconnect power before installation or servicing.
- Ensure the power supply is disconnected before any wiring or maintenance.
- Do not exceed the maximum load rating of 16A / 3500W.
- This device is designed for indoor use in dry environments.
- Keep out of reach of children.
Key Features
- 3500 W / 16 A, 1NO+1NC contact configuration.
- Programmable for 24 hours / 7 days a week.
- Replaceable battery for memory retention during power failure.
- Automatic time error correction of +/- 30 seconds weekly.
- Supports 16 ON/OFF program settings.
- Manual ON/OFF control capability.
Technical Specifications
| Manufacturer | SINOTIMER |
| Model Number | TM919-4 |
| Voltage Options | AC 110V, 220V, 85-265V (depending on specific model) / 12V AC/DC |
| Current Rating | 16A |
| Power Consumption | 3500W (Max) |
| Programmable Cycles | 16 ON/OFF settings per day/week |
| Time Error Correction | +/- 30 seconds, weekly |
| Battery Type | Lithium-metal (replaceable) |
| Material | ABS |
| Dimensions (L x W x H) | 8.6 x 6.6 x 3.6 cm |
| Weight | 136 g |
Figure 1: Dimensions of the SINOTIMER TM919 Digital Time Switch. The device measures 8.6 cm in length, 6.6 cm in width, and 3.6 cm in height. The display area is 4.5 cm high, and the side profile shows a depth of 4.7 cm with a 3 cm height for the main body.
Setup and Installation
Mounting
The SINOTIMER TM919 is designed for Din Rail mounting. Ensure the Din Rail is securely installed in a suitable enclosure. Align the timer with the Din Rail and press firmly until it clicks into place.
Figure 2: Side view of the SINOTIMER TM919, illustrating the Din Rail mounting clip at the bottom and the battery compartment on the side. The battery is visible next to the device.
Wiring Instructions
Important: Disconnect all power before attempting any wiring. Follow local electrical codes and standards. The TM919 has terminals for power input (1, 2) and load output (3, 4, 5).
Figure 3: Basic wiring diagram for the SINOTIMER TM919 controlling a direct load (e.g., a light bulb). Line (L) and Neutral (N) input power are connected to terminals 1 and 2 respectively. The load is connected between terminal 3 (Normally Open, NO) and Neutral (N). Terminal 4 is Common (COM) and terminal 5 is Normally Closed (NC).
Figure 4: Advanced wiring diagram for the SINOTIMER TM919 controlling a higher power load via an external contactor (e.g., ABB AX-09-30-10). The timer's output (terminals 3 and 4) controls the coil of the contactor, which then switches the main power to the load. This setup is used for loads exceeding the timer's direct current rating.
Figure 5: Rear view of the SINOTIMER TM919, showing the terminal block labels. Terminals 1 and 2 are for power input. Terminals 5, 4, and 3 correspond to Normally Open (NO), Common (COM), and Normally Closed (NC) contacts, respectively. The device also displays its 7-day programmable electronic timer function and DC12V 16(8)A, 250VAC rating.
Operating Instructions
Familiarize yourself with the buttons on the front panel:
- (P): Program setting button
- D+: Day adjustment
- H+: Hour adjustment
- M+: Minute adjustment
- RESET: Clear all settings
- MANUAL: Manual ON/AUTO/OFF toggle
- CLOCK: Used in combination with D+, H+, M+ to set current time.
Figure 6: Front view of the SINOTIMER TM919, displaying the digital screen and control buttons. The screen shows the current time (9:19 AM) and the operating mode (AUTO). Buttons for Program, Day, Hour, Minute, Reset, and Manual control are clearly visible.
Setting Current Time
- Press and hold the CLOCK button.
- While holding CLOCK, press D+ to set the current day of the week.
- While holding CLOCK, press H+ to set the current hour.
- While holding CLOCK, press M+ to set the current minute.
- Release the CLOCK button to save the time.
Programming ON/OFF Cycles
The timer supports up to 16 ON/OFF programs. Each program consists of an ON time and an OFF time.
- Press the (P) button once. The display will show "1 ON".
- Press D+ to select the day(s) for this program (e.g., Mon-Sun, Mon-Fri, Sat-Sun, etc.).
- Press H+ to set the desired ON hour.
- Press M+ to set the desired ON minute.
- Press (P) again. The display will show "1 OFF".
- Repeat steps 2-4 to set the desired OFF day(s), hour, and minute.
- Continue pressing (P) to set subsequent ON/OFF programs (2 ON, 2 OFF, etc.) up to 16 programs.
- To exit programming mode and save settings, press the CLOCK button.
Manual Override
Press the MANUAL button to cycle through the operating modes:
- ON: The output is continuously ON, ignoring programs.
- AUTO: The timer operates according to the programmed ON/OFF cycles.
- OFF: The output is continuously OFF, ignoring programs.
Ensure the timer is in AUTO mode for programmed operations.
Countdown Function
The TM919 includes a countdown feature for temporary operations.
- Press CLOCK and (P) buttons together for 3 seconds to enter countdown format.
- Press CLOCK and H+ or CLOCK and M+ to set the countdown time. The maximum range is 23 hours and 59 minutes.
- Press MANUAL to start the countdown.
- Press (P) to stop the countdown. The timer will return to the preset countdown time and remain in the OFF state.
- To exit countdown mode, press CLOCK and (P) together for 3 seconds again. The timer will return to clock format.
Maintenance
Battery Replacement
The TM919 includes a replaceable lithium-metal battery to retain programmed settings during power outages. If the display becomes dim or settings are lost frequently, the battery may need replacement.
- Disconnect all power to the timer before proceeding.
- Carefully remove the timer from its Din Rail mount.
- Locate the battery compartment on the side of the unit (refer to Figure 2).
- Open the compartment and replace the old battery with a new, identical lithium-metal battery.
- Close the compartment, remount the timer, and restore power.
- Reset the current time after battery replacement.
Regular cleaning with a dry, soft cloth is recommended to keep the display clear and buttons functional.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | No power supply or low internal battery. | Check power connections. Replace the internal battery if necessary. |
| Programs are not executing. | Timer is not in AUTO mode. Incorrect programming. | Press MANUAL until "AUTO" is displayed. Review and correct program settings. |
| Load does not turn ON/OFF. | Incorrect wiring. Overload. Faulty load. | Verify wiring according to diagrams. Ensure load does not exceed 16A/3500W. Test the load independently. |
| Time is inaccurate. | Internal clock drift (minimal). | The timer has an automatic correction of +/- 30 seconds weekly. If significant drift occurs, reset the time. |
| Cannot set programs. | Buttons unresponsive. | Press the RESET button (usually a small recessed button requiring a pointed object) to clear all settings and try again. |
Warranty and Support
Specific warranty information for the MCR SINOTIMER TM919 is typically provided at the point of purchase or with the product packaging. Please refer to your purchase documentation for details regarding warranty coverage and duration.
For technical support or service inquiries, please contact your retailer or the manufacturer directly using the contact information provided with your product.