---
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: "€ 18.26"
currency: EUR
in_stock: true
reviews_count: 8
category: "Blackt Electrotech"
url: https://www.desertcart.gr/products/111162674-blackt-electrotech-bt41d4-digital-timer-switch-relay-din-rail-25
store_origin: GR
region: Greece
---

# 25 Amps heavy-duty 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:** € 18.26
**Availability:** ✅ In Stock

## Summary

> ⏰ Power your day, your way — never miss a beat with BT41D4!

## 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?** € 18.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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 Flexibility:** Switch effortlessly between AUTO timed control and MANUAL override for ultimate operational freedom.
- • **Robust 25A Power Handling:** Supports high-load devices like air conditioners and water heaters without breaking a sweat.
- • **Uninterrupted Reliability:** Built-in backup battery ensures your settings stay intact even during unexpected power cuts—no resets, no hassle.
- • **Space-Savvy DIN Rail Design:** Compact and sleek, fits perfectly into your electrical panel without crowding your setup.
- • **Precision Scheduling Mastery:** Customize up to 30 daily/weekly programs for seamless automation tailored to your lifestyle or business needs.

## Overview

The Blackt Electrotech BT41D4 is a high-performance digital timer switch relay designed for single-phase systems, offering programmable automation with up to 30 On/Off schedules and 7-day flexibility. Rated for 25 Amps, it handles heavy-duty electrical loads, making it ideal for residential, commercial, and industrial applications. Its built-in backup battery preserves settings during outages, while the compact DIN rail form factor ensures easy integration into existing setups. Perfect for professionals seeking reliable, customizable, and space-efficient timing control.

## 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 | #12,968 in Home Improvement ( See Top 100 in Home Improvement ) #30 in Wall Timer Switches |
| Brand | Blackt Electrotech |
| Colour | White |
| Country of Origin | India |
| Customer Reviews | 4.0 4.0 out of 5 stars (613) |
| Date First Available | 31 January 2019 |
| Generic Name | timer |
| Importer | Blackt Electrotech |
| Included Components | false |
| Item Weight | 130 g |
| Item model number | BT-21252 |
| Manufacturer | Blackt Electrotech, www.blackt.in |
| Material | Polycarbonate |
| Model number | BT-21252 |
| Net Quantity | 1.00 Count |
| Number of Memory Sticks | 1 |
| Number of settings | 16 |
| Packer | Blackt Electrotech |
| Product Dimensions | 10D x 6W x 8H Centimeters |
| Screen Size | 99 Millimetres |
| UPC | 710918665375 |

## 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)

## 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.

### ⭐⭐⭐⭐⭐ Excellent product
*by V***I on 13 January 2026*

Excellent performance

## Frequently Bought Together

- Blackt Electrotech (BT41D4) : Digital Electronic Timer Switch 220V 25Amp DIN Rail Programmable
- Blackt Electrotech 230V 24x7 Energy Saving Socket Timer Digital Programmable Plastic (White)
- Blackt Electrotech BT31P2 White Water Proof 230Volt Auto Day/Night on and Off Photocell, Ldr Sensor Switch for Lighting (5 Pic Pack)

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

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-05*