We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
INTERMATIC K4221C Adjustable Stem-Mounted Photocell with Swivel Arm - Adjustable Stem-Mounted Photocells with Swivel Arms
INTERMATICAdjustable Stem-Mounted Photocells with Swivel Arms

INTERMATIC K4221C Adjustable Stem-Mounted Photocell with Swivel Arm

The INTERMATIC K4221C is an adjustable stem-mounted photocell with a swivel arm, designed for thread stem photocell mounting. It features a 1/2-inch stem diameter, SPST switching, and operates at 120V AC. This unit…

SKU 3G-OTH-28218

Brand
INTERMATIC
Item
K4221C Adjustable Stem-Mounted Photocell with Swivel Arm
Part Number
K4221C
Category
Adjustable Stem-Mounted Photocells with Swivel Arms
Available to Order
Also known as:K4221CINTERMATIC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

INTERMATIC
Manufacturer Part Number
K4221C
Type
SPST
AC
120V
Includes
Lock Nut
Stem Dia
1/2 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

INTERMATIC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The INTERMATIC K4221C is an adjustable stem-mounted photocell with a swivel arm, designed for thread stem photocell mounting. It features a 1/2-inch stem diameter, SPST switching, and operates at 120V AC. This unit includes a lock nut for secure installation.

Frequently Asked Questions

What is the INTERMATIC K4221C photocontrol used for?

The INTERMATIC K4221C is an adjustable stem-mounted photocell with a swivel arm, used for automatic dusk-to-dawn lighting control in industrial and commercial outdoor applications. It switches lights on at darkness and off at daylight, operating at 120V AC with SPST switching.

What are the specifications of the INTERMATIC K4221C?

The INTERMATIC K4221C features a 1/2-inch stem diameter, SPST switching, and operates at 120V AC. It includes a lock nut for secure thread stem mounting. The adjustable swivel arm allows precise positioning for optimal light sensing.

Where to buy the INTERMATIC K4221C worldwide?

3G Electric supplies the INTERMATIC K4221C photocontrol worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this adjustable stem-mounted photocell.

How to install the INTERMATIC K4221C photocontrol?

Install the INTERMATIC K4221C by threading the 1/2-inch stem into a standard conduit opening, then secure with the included lock nut. Adjust the swivel arm to point the photocell away from artificial light sources. Wire per local codes: connect line, load, and neutral for 120V AC operation.

Used in

Common applications for INTERMATIC
Outdoor lighting control — INTERMATIC ET2145CR digital timer for parking lot lighting schedules
HVAC scheduling — INTERMATIC T7801B electromechanical timer for 7-day ventilation system cycling
Dusk-to-dawn lighting — INTERMATIC K4141C photocontrol for automatic street or sign lighting
Short-cycle pump control — INTERMATIC FD5MW spring-wound timer for sump pump test cycles
Plug-in appliance timing — INTERMATIC DT200LT digital plug-in timer for outdoor holiday lighting
Indoor load shedding — INTERMATIC ET2805C astronomic timer for office lighting based on daylight
Not sure this is the right part? Photo-identify it

INTERMATIC Products

3G Electric supplies INTERMATIC adjustable stem-mounted photocells with swivel arms. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from INTERMATIC

View all INTERMATIC parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first