Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
11.91.8.230.0000 Finder light relay with timer 1pole 16A 230V
Finder 11.91.8.230.0000 is a programmable 110–230 V AC/DC light-dependent relay with a daily time switch, adjustable 1–150 lx threshold, separate sensor and 16 A changeover output for automatic lighting control.
£57.57
Why Choose the Finder 11.91.8.230.0000 Light-Dependent Relay?
The Finder 11.91.8.230.0000 is an advanced programmable light-dependent relay with an integrated time switch, designed to control lighting automatically according to the measured ambient light level. As part of the Finder 11 Series, it combines light-sensitive switching, daily scheduling and a separate external light sensor within a compact DIN rail-mounted device.
An adjustable switching threshold of 1–150 lx allows the relay to operate connected lighting at the required ambient brightness level. Its programmable daily time-switch function can inhibit the main output during selected periods, helping reduce unnecessary lighting operation and energy consumption.
The Finder 11.91.8.230.0000 operates from a 110–230 V AC/DC supply and provides one changeover contact rated at 16 A at 250 V AC. An LCD display, joystick control and light feedback compensation support accurate configuration and dependable automatic lighting control.
Key Advantages
- Automatically controls lighting according to ambient light levels.
- Adjustable 1–150 lx switching threshold supports precise configuration.
- Integrated daily time switch can inhibit lighting during programmed periods.
- 16 A changeover contact supports a wide range of lighting loads.
- Separate external light sensor enables accurate ambient light measurement.
- LCD display and joystick control simplify programming and monitoring.
Key Features
- Finder 11.91 programmable light-dependent relay.
- 110–230 V AC/DC rated supply voltage.
- One changeover contact rated at 16 A, 250 V AC.
- Adjustable ambient light threshold from 1–150 lx.
- Integrated daily time-switch function.
- Built-in light feedback compensation.
- Auxiliary output rated at 12 V DC, maximum 1 W.
- Separate light sensor with a maximum connection distance of 50 m.
- LCD display with joystick-based controls.
- Compact 35 mm DIN rail-mounted format.
Automatic Lighting Control Based on Ambient Light
Light-dependent relays monitor ambient brightness through a remote photosensor and switch connected lighting when the measured level crosses a configured threshold. The Finder 11.91 includes switch-on and switch-off delays that help prevent unwanted operation caused by brief changes in light, such as vehicle headlights or temporary shadows.
The integrated daily time switch adds scheduled control to the light-sensitive operation, allowing the main output to remain disabled during periods when lighting is not required. Light feedback compensation also helps prevent connected lamps from affecting the sensor measurement, supporting stable and efficient lighting control.
Typical Applications
- Street and public-area lighting.
- Commercial exterior lighting.
- Car parks and access routes.
- Building perimeter and security lighting.
- Shop signs and illuminated displays.
- Garden, pathway and landscape lighting.
Technical Specifications
Tick the specs you need, then view products that match.
| Supply Voltage | 110–127 V AC/DC, 208–250 V AC/DC | |
|---|---|---|
| Mounting Type | DIN rail | |
| Switching Current (A) | 16 A | |
| Device Type | Time switch | |
| Coil / Supply Voltage | 110 V AC, 110 V DC, 115 V AC, 120 V AC, 125 V DC, 208 V AC, 220 V AC, 220 V DC, 230 V AC | |
| Contacts | 1 C/O | |
| IP Rating | IP20 | |
| Manufacturer | Finder | |
| Series | 11 Series | |
| Model | 11.91.8.230.0000 | |
| Product type | Programmable light-dependent relay with time switch | |
| Rated supply voltage | 110–230 V AC/DC | |
| AC supply frequency | 50 / 60 Hz | |
| Operating voltage range | 88–253 V AC/DC | |
| Rated power | 5 VA at 50 Hz / 2.1 W | |
| Contact configuration | 1 CO (SPDT) | |
| Contact rating | 16 A at 250 V AC | |
| AC1 switching capacity | 4000 VA | |
| AC15 switching capacity | 750 VA at 230 V AC | |
| CFL / LED lamp load | 400 W at 230 V AC | |
| Light threshold adjustment | 1–150 lx | |
| Switch-on delay | 25 s | |
| Switch-off delay | 50 s | |
| Auxiliary output | 12 V DC, maximum 1 W | |
| Maximum sensor cable length | 50 m | |
| Protection rating | IP20 | |
| Operating temperature | −20 to +50 °C | |
| Mounting type | 35 mm DIN rail | |
| Dimensions (W × H × D) | 35 × 88.8 × 60.8 mm | |
| Applicable standards | EN 60669-1 and EN 60669-2-1 |
Frequently Asked Questions
What is the Finder 11.91.8.230.0000 used for?
It automatically switches lighting according to the measured ambient light level and can inhibit the output during programmed periods using its integrated daily time switch.
What supply voltage does this relay require?
The Finder 11.91.8.230.0000 has a rated supply voltage of 110–230 V AC/DC.
What is the adjustable light threshold range?
The ambient light switching threshold can be adjusted between 1 and 150 lx.
What output contact does the relay provide?
It provides one changeover contact rated at 16 A at 250 V AC.
How is the Finder 11.91 installed?
The relay mounts on a 35 mm DIN rail and operates with a separate external light sensor that can be connected at a distance of up to 50 m.
Trusted Lighting Control from Finder
Finder 11 Series light-dependent relays provide electricians, building-services engineers and system integrators with dependable automatic lighting control, flexible programming and efficient DIN rail installation.
