SINOTIMER TM618H-4 Digital Programmable Timer Switch

1. Introduction

The SINOTIMER TM618H-4 is a versatile digital programmable timer switch designed for precise control of electrical appliances. It features a 7-day weekly programming capability, allowing for up to 16 ON/OFF programs per day. This timer is equipped with a 12/24-hour format clock, a countdown function, and a sleep mode for energy efficiency. Its compact design allows for both panel and screw installation.

2. Key Features

• Unique Patent Design: Modern and functional aesthetic.
• Max 1.6 inch HD LCD Display: Clear and easy-to-read interface.
• 12/24 Hour Format Shift (AM/PM): Flexible time display options.
• Countdown Function: For specific short-term timing needs.
• Sleep Mode: Reduces power consumption when not actively in use.
• Saving Programs by Inside Battery: Retains settings during power outages for up to 90 days.
• 16 ON/OFF Programs per Day: Allows for complex scheduling.
• Auto Time Deflection Correction: Weekly adjustment for improved accuracy.
• Manual ON/OFF/AUTO Control: Provides immediate control over connected devices.

3. Specifications

4. Setup and Installation

4.1. Wiring Diagram (for TM618H-4 12V DC/AC Model)

The TM618H-4 model is designed for 12V DC/AC input. Ensure correct polarity for DC connections. Refer to the diagram below for typical wiring. For other voltage models, consult the specific wiring diagram provided with that variant.

Wiring Connections:

• Input (12V DC/AC): Connect your 12V power source to the designated input terminals. For DC, ensure positive and negative terminals are correctly matched.
• Output (Load): Connect the device you wish to control (e.g., light, pump) to the output terminals. The timer acts as a switch for this circuit.

Important: Always disconnect power before performing any wiring. If you are unsure about electrical wiring, consult a qualified electrician.

4.2. Initial Power-up and Reset

Upon initial power-up or after a prolonged power outage, the display may be blank. Press the 'R' (Reset) button to clear all settings and restore the timer to its default state. The internal battery will maintain the clock and programmed settings during short power interruptions.

4.3. Installation

The TM618H-4 timer supports two installation methods:

• Panel Mounting: Secure the timer into a compatible panel cutout.
• Screw Mounting: Use screws to attach the timer to a flat surface.

5. Operating Instructions

5.1. Setting the Current Time

1. Press and hold the CLOCK button.
2. While holding CLOCK, press WEEK to set the current day of the week.
3. While holding CLOCK, press HOUR to set the current hour.
4. While holding CLOCK, press MIN to set the current minute.
5. To switch between 12-hour and 24-hour format, press and hold CLOCK for 3 seconds.

5.2. Programming ON/OFF Cycles

The timer supports up to 16 ON/OFF programs per day. Each program consists of an ON time and an OFF time.

1. Press the PROG button once. The display will show "1 ON".
2. Press WEEK to select the day(s) for this program. You can choose individual days, blocks of days (e.g., Mon-Fri), or all days. There are 15 different combinations.
3. Press HOUR to set the desired ON hour.
4. Press MIN to set the desired ON minute.
5. Press PROG again. The display will show "1 OFF".
6. Repeat steps 2-4 to set the OFF time for the first program.
7. Press PROG again to move to the next program ("2 ON"). Repeat the process for up to 16 ON/OFF programs.
8. To exit programming mode, press the CLOCK button.

5.3. Countdown Function

The countdown function allows for a single, temporary ON or OFF period.

1. Press and hold D+ and H+ simultaneously for 3 seconds to enter countdown mode. The display will show "00:00".
2. Press HOUR and MIN to set the desired countdown duration (up to 23 hours and 59 minutes).
3. Press MANUAL to start the countdown.
4. To stop the countdown, press MANUAL again. The timer will revert to its pre-countdown state (OFF).
5. To exit countdown mode and return to clock display, press and hold D+ and H+ simultaneously for 3 seconds.

5.4. Auto Time Deflection Correction (Weekly)

This feature allows for fine-tuning the timer's accuracy.

1. Press and hold CLOCK and C/R simultaneously for 3 seconds to enter correction mode. The display will show "ld:m".
2. Press D+ to adjust the correction value (up to +/- 30 seconds). This value represents the weekly adjustment.
3. Press CLOCK to exit correction mode. The system will automatically apply this correction weekly.

5.5. Sleep Mode

To conserve power, the timer can be put into sleep mode, turning off the LCD display.

1. From the clock display, press and hold HOUR and MIN simultaneously for 3 seconds. The LCD will turn off.
2. To reactivate the display and exit sleep mode, press the R (Recall) button. All settings will be retained.

5.6. Manual Control (ON/OFF/AUTO)

The MANUAL button allows you to override programmed settings temporarily.

• Press MANUAL repeatedly to cycle through the modes: ON > OFF > AUTO.
• ON: The connected device will remain ON, overriding any OFF programs.
• OFF: The connected device will remain OFF, overriding any ON programs.
• AUTO: The timer will operate according to its programmed ON/OFF cycles.

6. Maintenance

• Keep the timer clean and dry. Avoid exposure to excessive moisture or dust.
• Do not use abrasive cleaners or solvents. Wipe with a soft, damp cloth if necessary.
• Ensure proper ventilation if installed in an enclosure to prevent overheating.
• The internal battery is designed for long-term use and typically does not require replacement.

7. Troubleshooting

• Display is blank: Ensure the timer is receiving power. If it is, press the 'R' (Reset) button.
• Programs not running: Check if the timer is in 'AUTO' mode using the MANUAL button. Verify that the current time and programmed times are set correctly.
• Incorrect time: Reset the current time as described in section 5.1. Consider using the Auto Time Deflection Correction feature if consistent drift occurs.
• Device not turning ON/OFF: Check the wiring connections to the load. Ensure the load's power requirements do not exceed the timer's capacity (16A resistive, 8A inductive).
• Timer appears unresponsive: Press the 'R' (Reset) button. Note that this will clear all programmed settings.

8. User Tips

• This timer is suitable for various applications, including controlling irrigation systems, lighting, and other home automation tasks.
• When using for irrigation, ensure the pump's voltage and current draw are within the timer's specifications.
• For critical applications, periodically verify the timer's operation.

9. Warranty and Support

For detailed warranty information and further technical support, please refer to the official product documentation or contact SINOTIMER customer service.

A comprehensive user manual in PDF format is available for download: View User Manual (PDF)