Theben TR642top3 BLE RC Digital Time Switch with Astro and Annual Program, 2 Channels, 3 TE

Managing time-dependent electrical loads—lighting, heating, pumps, or signage—requires precise, flexible scheduling that adapts to daily, weekly, and seasonal changes. The Theben TR642top3 BLE RC digital time switch solves this by combining two independent channels, astronomical and annual programming, and modern Bluetooth connectivity in a compact 3-module DIN rail housing. Whether you need to automate a building's exterior lights according to sunrise and sunset, run complex holiday schedules, or simply reduce energy waste, this device delivers reliable, high-precision switching with a 10-year power reserve.

Who is it for

Electricians, facility managers, and advanced DIY users who need a robust, programmable timer for commercial or residential installations. It is ideal for controlling lighting, HVAC equipment, irrigation, or any load requiring up to 16 A per channel. The Bluetooth interface and app support make it easy to configure from a smartphone, while the OBELISK top3 interface allows PC programming for larger projects.

Main features

• 2 potential-free changeover contacts, each rated 16 A at 250 V AC
• Astronomical function with automatic summer/winter time change and location-based sunrise/sunset times
• Annual program with date-based switching for holidays and special days
• Bluetooth Low Energy (BLE) for wireless programming via Theben app (iOS/Android)
• High-resolution LCD display with backlight for clear status and programming
• Zero-cross switching for extended relay life and reduced interference
• 800 memory locations for switching programs
• 10-year power reserve (lithium battery) maintains time and programs during power outages

Specifications

• Supply voltage: 230 V AC, 50-60 Hz
• Switching output: 2 changeover contacts, potential-free
• Max. switching current: 16 A per channel (resistive load)
• Shortest switching interval: 1 second
• Program types: Weekly, annual, astronomical, pulse, cycle, random
• Operating temperature: -30 °C to +55 °C
• Protection rating: IP20
• Mounting: DIN rail, 3 modules (TE)
• Connectivity: Bluetooth BLE, OBELISK top3 interface for PC programming
• Automatic summer/winter time change
• Operating hour counter

Tips

Use the astronomical function to automatically switch outdoor lighting based on sunrise and sunset times for your location, eliminating the need for manual adjustments throughout the year. For holiday periods, the annual program can be set to switch off non-essential circuits, saving energy and enhancing security. The Theben app simplifies setup and allows you to copy programs to multiple devices, ideal for larger installations.