2-channel timer Eltako S2U12DBT-UC 230V Bluetooth — programmable switching relay

Eltako S2U12DBT-UC is a 2-channel 230V programmable switching relay with Bluetooth connectivity designed for local setup and control. The compact unit mounts on a standard DIN rail and provides two independent switching outputs for automating lighting, heating control circuits, or other 230V appliances. Local Bluetooth access allows configuration and manual override from a smartphone or tablet without wiring to a central controller, while onboard scheduling enables daily and weekly time programs for unattended operation.

Advantages

The device offers two independent channels, each with programmable time functions and manual override via Bluetooth. Compact DIN-rail design simplifies integration into distribution panels and saves space. Bluetooth setup removes the need for separate configuration tools or network wiring for local operation. The relay supports multiple timing modes and retains its settings, providing reliable scheduled switching for typical residential and light-commercial applications.

Suitable for

Key specifications

How to use

Install the relay on a standard DIN rail inside an appropriate distribution enclosure and connect supply and load conductors following local electrical regulations. Use the manufacturer's Bluetooth-capable application on a smartphone or tablet to pair with the unit, configure channel-specific time programs, and set manual or automatic modes. Verify correct operation by testing each channel’s switching function and confirm that schedules activate the connected loads at the intended times.

Recommendations

Ensure installation and wiring are performed by a qualified electrician and comply with applicable safety standards. Use the Bluetooth configuration only within secure proximity to the device and keep software up to date. For loads near the relay's rated limits, verify inrush currents and consider protective measures or contactors for inductive or high-start-current devices.