UM-205C rotary lock analog electronic light control switch Fail-On

Product Summary

The UM-205C rotary lock analog electronic light control switch series products are suitable for autonomously controlling street lighting and flowers based on the natural lighting level of the environment Garden lighting, corridor lighting, porch lighting, and park lighting.

This series of products adopts an electronic design with photoresistors and is equipped with surge arresters (MOVs). Confirm the specified AC supply range for the exact UM-205C model; this description does not establish compatibility with every power source.

In addition, its delay control function can avoid redundant operations caused by spotlights or lightning at night.

This series of products provides three locking terminals, which meet the requirements of ANSI C136.10 and ANSI/UL773 area lighting for plug-in and rotary locking Standard requirements for optical controllers.

Features

• ANSI C136.10 rotary lock
• Delay of 3-20 seconds
• Built in surge protection
• Failure mode: turn on the lights
• UV resistant housing
• Supports IP65 (with optical control socket)

Specifications

Installation

Disconnect power; wire the color coded receptacle according to the diagram below.

Push the photocontrol on and twist it clockwise to lock it into the receptacle.

Adjust the receptacle position if necessary, to ensure the Photocell facing the NORTH direction as indicated on the top of the photocontrol.

Initial Testing

• The Photocontrol turns off immediately when initially installed.
• To test “turn on” during daytime, cover its eye with opaque material.
• Do not cover with finger because light traveling through fingers may be great enough to keep the Photocontrol off.
• photocontrol test will take approximately 2 minutes.

Outdoor operation depends on the stated operating limits and complete controller, socket and seal assembly.

UM-205C Selection FAQs

Does UM-205C accept every power source?

No. The table specifies 120-277VAC rated input, a 105-305VAC operating range and 50/60Hz. Confirm the exact unit and LED driver requirements; do not infer DC or unrestricted supply compatibility.

What does Fail-On mean for this model?

The description identifies Fail-On as the offered failure mode. Confirm the required failure behaviour for the project and the exact ordering specification; do not treat UM-205C as interchangeable with a Fail-Off model.

How is outdoor protection established?

The features describe IP65 with a photocontrol socket. Confirm the compatible ANSI C136.10 receptacle, seals, mounting conditions and complete assembly documentation, along with load and LED driver inrush compatibility.

See photocontrol selection, NEMA receptacles and accessories, and selection and installation FAQs.