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Rectangular white DIN-rail timer with LCD backlight display and terminal blocks

Hetai Tech

Hetai Tech TM928AKL wearable technology

SKU CH-SEKG-0DN1M MPN TM928AKL

A 7-day programmable DIN-rail timer with LCD backlight, 16 on/off programs and a 16 A / 30 A load rating for 85–265 V supplies

  • LCD backlight shows clear status in any light
  • 16 on/off programmes cover a full weekly schedule
  • 85–265 V input works on 110 V and 220 V supplies
  • 35 mm DIN rail mount fits standard panels
  • 16 A or 30 A load rating handles heavy circuits

Universal Weekly Programmer

The TM928AKL is a DIN-rail mounted weekly programmer designed for automated control of electrical circuits in residential and commercial installations. It provides 16 on/off programs across a seven-day cycle with a backlit LCD for clear status reading. The unit operates on a wide 85 to 265V AC supply at 50 or 60Hz, making it suitable for both 110V and 220V mains environments. It targets installers and facility managers needing reliable scheduled switching.

Voltage and Load Constraints

The controller accepts a universal input range of 85 to 265V AC at 50 or 60Hz without manual selection. Switching capacity is rated at 16A for the TM928AKL model, while the related TM928BKL variant handles 30A. Both versions provide one normally open and one normally closed contact for load isolation. The programmer does not support loads exceeding these current ratings or voltages outside the stated AC range.

DIN Rail Mounting and Battery

The device clips onto standard 35mm DIN rail within a compact 86 by 65 by 36mm housing for panel integration. The TM928AKL uses a user-replaceable CR2032 coin cell to maintain clock and program memory during power loss. In contrast, the TM928BKL uses a non-replaceable internal battery, meaning the entire unit requires replacement when that cell depletes. Wiring diagrams differ between the two models.

Highlights

  • LCD backlight shows clear status in any light
  • 16 on/off programmes cover a full weekly schedule
  • 85–265 V input works on 110 V and 220 V supplies
  • 35 mm DIN rail mount fits standard panels
  • 16 A or 30 A load rating handles heavy circuits

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 16A TM928AKL or the 30A TM928BKL model?

The TM928AKL handles 16A loads and uses a replaceable CR2032 battery, while the TM928BKL handles 30A loads with a non-replaceable internal battery; select based on your circuit current requirement.

What does the 16 on/off programs figure mean for daily scheduling?

You can set up to 16 separate on or off events across a 7-day cycle, allowing multiple switching times per day for equipment like lighting or pumps.

How does the 85–265V 50/60Hz input range affect installation?

The unit accepts mains voltages from 85V to 265V at either 50Hz or 60Hz, so it works on 110V and 220V supplies without a separate transformer.

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