ETI RELAY PHOTO SOU-1 230V Light Dependent Switch Photorelay

Outdoor lighting often stays on too long or fails to activate when needed, wasting energy and compromising safety. The ETI RELAY PHOTO SOU-1 230V solves this by automatically switching lights based on ambient light levels, with an adjustable time delay to prevent false triggering.

Who is it for

Electricians and facility managers who need reliable, DIN-rail mounted lighting control for streetlights, signage, or building exteriors. Ideal for anyone wanting to automate lighting without complex programming.

Main features

• Light-dependent switching with adjustable illumination range from 1 to 100,000 lux
• Built-in adjustable time delay (0–10 minutes) to avoid nuisance switching
• SPDT output rated at 16 A / 250 V AC for direct control of lighting loads
• Compact 1-module DIN rail mounting for easy integration into distribution boards
• External sensor compatibility (SKS, SKS-B, SKS-M) for flexible installation
• LED indicators for supply and output status

Specifications

• Supply voltage: AC 230 V, 50/60 Hz
• Output: 1× SPDT, 16 A / 250 V AC
• Illumination range: 1–100,000 lux (adjustable)
• Time delay: 0–10 minutes (adjustable)
• Hysteresis: 15%
• Power consumption: 1.5 VA
• Operating temperature: -20 to +55 °C
• Protection degree: IP20 (terminals), IP40 (front panel)
• Terminal capacity: max 2.5 mm²
• Dimensions: 1 module (17.5 mm width)

Tips

Mount the external sensor away from artificial light sources to ensure accurate daylight detection. Use the time delay to prevent rapid on/off cycling caused by passing clouds or car headlights.