---
product_id: 111162674
title: "Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase)"
brand: "blackt electrotech"
price: "$91865"
currency: COP
in_stock: true
reviews_count: 8
category: "Blackt Electrotech"
url: https://www.desertcart.co/products/111162674-blackt-electrotech-bt41d4-digital-timer-switch-relay-din-rail-25
store_origin: CO
region: Colombia
---

# 25A heavy-duty current capacity backup battery for power outage safety 30 programmable on/off schedules Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase)

**Brand:** blackt electrotech
**Price:** $91865
**Availability:** ✅ In Stock

## Summary

> ⏰ Power your schedule, never miss a beat!

## Quick Answers

- **What is this?** Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) by blackt electrotech
- **How much does it cost?** $91865 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/111162674-blackt-electrotech-bt41d4-digital-timer-switch-relay-din-rail-25)

## 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

- • **Dual Mode Convenience:** Seamlessly switch between automatic timed control and manual override for ultimate operational freedom.
- • **Space-Savvy DIN Rail Design:** Compact and sleek, it integrates effortlessly into your electrical panel, saving space while boosting efficiency.
- • **Uninterrupted Smart Control:** Built-in backup battery ensures your timer settings stay intact even during power failures—no resets, no hassle.
- • **Precision Scheduling Mastery:** Customize up to 30 on/off programs with 7-day flexibility to match your exact lifestyle or business needs.
- • **Robust 25 Amp Power Handling:** Supports high-load devices like air conditioners and water heaters without breaking a sweat.

## Overview

The Blackt Electrotech BT41D4 is a compact, DIN rail-mounted digital timer switch relay designed for single-phase systems. It supports up to 25 amps, offers 30 programmable on/off schedules with 7-day customization, and features a backup battery to retain settings during outages. Ideal for residential, commercial, and industrial applications, it combines robust power handling with flexible operation modes in a space-saving design.

## Description

Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) : desertcart.in: Home Improvement

Review: Good product... Match the requirements well - Working properly and very useful
Review: A good Digital Timer Switch. - A good Digital Timer Switch Relay. But time with main clock. It goes slow. Has to readjusted after some months.

## Features

- 🕒 Programmable Automation: Easily set up to 30 On/Off programs with 7-day scheduling options, perfect for customizing operation for any day or combination of days.
- ⚡ Wide Applications: Ideal for controlling streetlights, neon signs, water heaters, air conditioners, agricultural tools, and more. A versatile solution for homes, offices, and commercial setups.
- 🔋 Backup Battery for Reliability: Built-in backup battery retains your settings during power outages, ensuring uninterrupted operation and convenience.
- 🔄 Flexible Operation Modes: Switch effortlessly between AUTO (timed) and MANUAL (manual on/off) modes for full control at your fingertips.
- 🛠️ Compact DIN Rail Design: Space-saving and portable, it fits seamlessly into your setup while maintaining access to other outlets.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NBBYN4N |
| Best Sellers Rank | #5,411 in Home Improvement ( See Top 100 in Home Improvement ) #14 in Wall Timer Switches |
| Brand | Blackt Electrotech |
| Colour | White |
| Country of Origin | India |
| Customer Reviews | 4.0 out of 5 stars 611 Reviews |
| Enclosure Material | Polycarbonate |
| Importer Contact Information | Blackt Electrotech |
| Included Components | false |
| Item Dimensions D x W x H | 10D x 6W x 8H Centimeters |
| Item Height | 5.6 Centimeters |
| Item Type Name | timer |
| Item Weight | 130 Grams |
| Manufacturer | Blackt Electrotech, www.blackt.in |
| Manufacturer Contact Information | www.blackt.in |
| Material | Polycarbonate |
| Number of settings | 16 |
| Packer Contact Information | Blackt Electrotech |
| Product Dimensions | 10D x 6W x 8H Centimeters |
| UPC | 710918665375 |
| Unit Count | 1.00 Count |

## Product Details

- **Brand:** Blackt Electrotech
- **Colour:** White
- **Item Weight:** 130 Grams
- **Material:** Polycarbonate
- **Product Dimensions:** 10D x 6W x 8H Centimeters

## Images

![Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) - Image 1](https://m.media-amazon.com/images/I/614E06+DavL.jpg)
![Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) - Image 2](https://m.media-amazon.com/images/I/71E0Q-5tsvL.jpg)
![Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) - Image 3](https://m.media-amazon.com/images/I/71jD6bsTBtL.jpg)
![Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) - Image 4](https://m.media-amazon.com/images/I/71v5NUCrf4L.jpg)
![Blackt Electrotech BT41D4 : Digital Timer Switch Relay DIN Rail, 25 Amps Programmable Automatic On/Off (Single-Phase) - Image 5](https://m.media-amazon.com/images/I/71vlPgMo-wL.jpg)

## Questions & Answers

**Q: How many programmes per day can set?  howmany this day programmae will work.? what is the warrnaty condition?**
A: 15 time

**Q: Does this reset with power cut? Or it has a rechargeable battery?**
A: It has a rechargeable battery and we need not reset it after power cut

**Q: I need to use this switch use as my main swicth. I need to off/cut my grid power at night and on at morning. Is that will work?**
A: It will in case your load on the mains is less than the rating of the relay in this timer, then it will work. But in case the load is more then you will have to use a contactor in between this timer and the mains

**Q: How to change the battery when dead ?**
A: Working fine

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product... Match the requirements well
*by N***L on 9 January 2026*

Working properly and very useful

### ⭐⭐⭐⭐ A good Digital Timer Switch.
*by C***S on 19 November 2025*

A good Digital Timer Switch Relay. But time with main clock. It goes slow. Has to readjusted after some months.

### ⭐⭐⭐⭐⭐ Good product and works well.
*by L***S on 9 October 2025*

So far, so good. Working well. Easy to install, easy to program Only problem is that the electrical connecting points are exposed so we had to improvise and attach a plastic strip to cover them. (See photos)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.co/products/111162674-blackt-electrotech-bt41d4-digital-timer-switch-relay-din-rail-25](https://www.desertcart.co/products/111162674-blackt-electrotech-bt41d4-digital-timer-switch-relay-din-rail-25)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-23*