12mm Stainless Steel Key Lock Switch — ON/OFF, S1203, 2-Pin, 2 Keys, Panel Mount

12mm Stainless Steel Key Lock Switch — ON/OFF, S1203, 2-Pin, Panel Mount

The S1203 key lock switch is a 12mm panel-mount security switch with a stainless steel body and ON/OFF operation. Requiring a physical key to operate, it prevents unauthorized power-on of equipment, making it ideal for security-sensitive electronics, industrial control panels, and DIY projects where accidental or unauthorized activation must be prevented. Two keys are included.

Key Specifications

Parameter	Value
Model	S1203
Panel Cutout Diameter	12mm
Body Material	Stainless steel
Operation	ON/OFF (key-operated)
Terminals	2-pin (NO contact)
Keys Included	2
Mounting	Panel mount (nut and washer)

Why Choose a Key Lock Switch?

• ✅ Physical key security — prevents unauthorized power-on of equipment
• ✅ Stainless steel body — durable and corrosion-resistant for panel use
• ✅ 12mm standard cutout — fits standard panel-mount holes
• ✅ 2 keys included — one for use, one as spare
• ✅ Simple 2-pin connection — easy to wire into any circuit

Typical Applications

• Security power switch for electronics enclosures
• Industrial control panel key switch
• DIY alarm system arm/disarm switch
• Equipment power-on authorization control
• Arcade machine and vending machine power switch
• Automotive and marine ignition-style switch

Package Contents

• 1 × S1203 12mm Key Lock Switch (stainless steel)
• 2 × Keys
• 1 × Mounting nut and washer

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.