---
product_id: 424907755
title: "Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable"
brand: "blackt electrotech"
price: "฿1983"
currency: THB
in_stock: true
reviews_count: 5
category: "Blackt Electrotech"
url: https://www.desertcart.co.th/products/424907755-blackt-electrotech-bt41d4-digital-electronic-timer-switch-220v-25amp-din
store_origin: TH
region: Thailand
---

# 16 programmable on/off cycles daily 25A 220V high load capacity 60-day power reserve backup Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable

**Brand:** blackt electrotech
**Price:** ฿1983
**Availability:** ✅ In Stock

## Summary

> ⏳ Take control of time — automate your world with Blackt Electrotech!

## Quick Answers

- **What is this?** Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable by blackt electrotech
- **How much does it cost?** ฿1983 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/424907755-blackt-electrotech-bt41d4-digital-electronic-timer-switch-220v-25amp-din)

## Best For

- blackt electrotech enthusiasts

## Why This Product

- Trusted blackt electrotech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Savvy Design:** Compact DIN rail mount fits neatly, freeing up valuable outlet space.
- • **Versatile Powerhouse:** Handles heavy-duty 25A loads, perfect for everything from streetlights to air conditioners.
- • **Effortless Programming:** Intuitive dial and pin system makes setup quick—no tech degree required.
- • **Precision Timing Mastery:** Set up to 16 on/off programs with 1-minute granularity for ultimate control.
- • **Uninterrupted Scheduling:** Built-in battery backup ensures your timer settings survive power outages seamlessly.

## Overview

The Blackt Electrotech BT41D4 is a compact, programmable digital timer switch designed for 220V AC circuits up to 25A. Featuring an LCD display, it supports up to 16 daily on/off programs with 1-minute precision and 7-day scheduling flexibility. Its built-in battery backup preserves settings for up to 60 days during power outages. Ideal for automating lighting, appliances, and industrial equipment, this DIN rail mount timer combines robust performance with user-friendly programming.

## Description

New BlackT Electrotech AC 220V 25A Digital Programmable Timer Switch. Switch ON/OFF automatically various of electric equipments according to the fixed time. Ideal for home appliance,agriculture facilities,broadcasting equipment,etc. usage. AC 220V 25A digital programmable timer switch. Switch ON/OFF automatically various of electric equipments according to the fixed time. Ideal for home appliance,agriculture facilities,broadcasting equipment,etc. usage. Specifications: *Display: LCD *Color: white *Material: ABS *Frequency: 50~60Hz *Power Reserve: 60 days *Clock Error: 1s/24h 25 Celsius *Build-in Battery: DC 1.2V/40MAH *Power Consumption: appro.1.5VAC *Contact Capacity: 25A 220V AC(Resistive Load) *Open/Close Time: 16 Times Day/Week Circle *Ambient Temperature: -25 Celsius to 60 Celsius *Size: 99X56X42mm/3.86" X2.17" X1.57"(L*W*H) Package Included: 1 x AC 220V 25A Din Rail Digital Programmable Electronic Timer Switch 1 x Manual

Review: The product is quite good. Even instructions are also quite helpful (see the official video of company on youtube). Now I had faced the problem of E1 or E2 error codes. After watching their official video I got the hint and corrected. I had searched for the solution to E1,E2 error codes but could not find. So briefly mentioning what is procedure So here is the sequence. 1) take a thin (like a ball pen tip) object press the soft cushion reset button just below the red led on right edge. This will RESET every thing. now the timer will show 00:00 2) now first you need to enter the Day : Hours : Minute as described in videos/instruction manual. In case the keyboard is locked. press the BIG RED unlock button. 3) after setting the time now press P BUTTON . it will show 1 ON set the on time as you want (as explained above) press P BUTTON again repeat same for OFF time and repeat this process as many times as you want multiple ON OFF times. 4) NOW TO COME OUT OF PROGRAMMING MODE PRESS THE "CLOCK BUTTON ON RIGHT SIDE OF P BUTTON. (May pressing other button landed me into E1, E2 problem.) Now you had come to TIME DISPLAY mode. 5) Now for safety press BIG RED button to lock this keypad. 6)If anywhere you missed sequence / pressed wrong button and get into E1 E2 business, 'LIKE ME' repeat the process with that thin object (ball pen tip). BY THE WAY SEE only THE OFFICIAL VIDEO FOR ACCURATE INFO/less confusion. I am using this product for a sump motor. The sump motor had come with it's own starter box. Now this output of this timer is given as input to that starter box. secondly i had kept in another plastic box since I did not have the DIN rack )
Review: Good performance. Skill is required to set the timer. Value for money. Quality is good.

## Features

- Wide Use : It is widely used in programmable control of streetlight, neon light (sign), lamp, water heater, air conditioner, billboard, electric cooker, booster, sprayer, bottler, preheater, agriculture facilities and broadcasting equipment etc.
- Easy to Program : Just turn the timer dial to the current time, push the pins down or pull up to set your on/off time, set the manual override switch to TIMER mode and then plug into outlet
- Auto Control : Press and hold on the door to shift easily between AUTO (timed on/off) or MANUAL (manual on/off) modes. A backup battery keeps your settings even in the event of a power outage, and it is convenient to our daily life.
- Programs-Easily set up to 16 On/Off programs, each with 7-day programming options. Settings can be as short as one minute. Choose your own individual days or simply select one of our convenient pre-set combination days.
- Size: Compact and portable design saves space, only takes up one socket and still leaves room to use the bottom wall outlet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NBBYN4N |
| Best Sellers Rank | #93,854 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #64 in Wall Timer Switches |
| Brand Name | Blackt Electrotech |
| Color | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (617) |
| Included Components | false |
| Item Dimensions D x W x H | 4.2D x 5.5W x 10H centimeters |
| Item Weight | 130 Grams |
| Manufacturer | Blackt Electrotech |
| Manufacturer Part Number | BT-21252 |
| Material Type | Acrylonitrile Butadiene Styrene |
| Model Number | BT-21252 |
| Number of settings | 1 |
| Screen Size | 99 Millimeters |
| UPC | 710918665375 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Blackt Electrotech
- **Colour:** White
- **Item weight:** 130 Grams
- **Material:** Acrylonitrile Butadiene Styrene
- **Product dimensions:** 4.2D x 5.5W x 10H centimeters

## Images

![Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable - Image 1](https://m.media-amazon.com/images/I/614E06+DavL.jpg)
![Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable - Image 2](https://m.media-amazon.com/images/I/71v5NUCrf4L.jpg)
![Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable - Image 3](https://m.media-amazon.com/images/I/81AQttXbo9L.jpg)
![Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable - Image 4](https://m.media-amazon.com/images/I/71jD6bsTBtL.jpg)
![Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable - Image 5](https://m.media-amazon.com/images/I/71vlPgMo-wL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***D on 18 September 2025*

The product is quite good. Even instructions are also quite helpful (see the official video of company on youtube). Now I had faced the problem of E1 or E2 error codes. After watching their official video I got the hint and corrected. I had searched for the solution to E1,E2 error codes but could not find. So briefly mentioning what is procedure So here is the sequence. 1) take a thin (like a ball pen tip) object press the soft cushion reset button just below the red led on right edge. This will RESET every thing. now the timer will show 00:00 2) now first you need to enter the Day : Hours : Minute as described in videos/instruction manual. In case the keyboard is locked. press the BIG RED unlock button. 3) after setting the time now press P BUTTON . it will show 1 ON set the on time as you want (as explained above) press P BUTTON again repeat same for OFF time and repeat this process as many times as you want multiple ON OFF times. 4) NOW TO COME OUT OF PROGRAMMING MODE PRESS THE "CLOCK BUTTON ON RIGHT SIDE OF P BUTTON. (May pressing other button landed me into E1, E2 problem.) Now you had come to TIME DISPLAY mode. 5) Now for safety press BIG RED button to lock this keypad. 6)If anywhere you missed sequence / pressed wrong button and get into E1 E2 business, 'LIKE ME' repeat the process with that thin object (ball pen tip). BY THE WAY SEE only THE OFFICIAL VIDEO FOR ACCURATE INFO/less confusion. I am using this product for a sump motor. The sump motor had come with it's own starter box. Now this output of this timer is given as input to that starter box. secondly i had kept in another plastic box since I did not have the DIN rack )

### ⭐⭐⭐⭐ Review
*by K***L on 17 August 2025*

Good performance. Skill is required to set the timer. Value for money. Quality is good.

### ⭐⭐⭐⭐⭐ Review
*by N***R on 24 March 2021*

Works like a charm. Installed it few days ago, using it to control my staircase and gate lights. Let's see how good it performs in a long run. Strongly recommended automation product for all size homes and offices. Not recommended for very heavy usage, experiences and reliability may differ. Will update on the performance after few months of usage. I wish it came with a face cover to protect the soft input buttons.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-24*