AC220V 1A 2*14MM Normally Open (NO) Gold-Plated Reed Switch with Green Tube & Gold Leads

Description

The 2×14mm Gold-Plated Reed Switch is a miniature, normally-open (Form A) magnetic switch designed for proximity sensing, position detection, and low-power switching applications. It consists of two ferromagnetic reed blades hermetically sealed in a glass envelope filled with inert gas. When a magnetic field is brought near, the blades magnetize and attract each other, closing the circuit. When the field is removed, the blades spring apart, opening the circuit .

The “Green Tube” refers to the glass envelope appearance, and the “Gold-Plated Leads” simplify soldering and resist oxidation . This switch is widely used in door/window magnetic contacts, proximity sensors, and DIY electronics projects.

Critical limitations: This is a normally-open switch—it closes only in the presence of a magnetic field. The glass envelope is fragile and must not be subjected to mechanical stress during lead bending or soldering. Do not use for AC mains switching—the contact rating is insufficient for 220V AC, and arcing can cause failure . For AC loads, use a relay driven by the reed switch.

Features

• Normally Open (Form A) Operation: Closes when a magnetic field is applied; opens when removed .

• Hermetically Sealed Glass Envelope: Inert gas filling protects contacts from oxidation .

• Gold-Plated Leads: Simplifies soldering and improves corrosion resistance .

• Compact 2×14mm Size: Small footprint suitable for space-constrained installations .

• Fast Switching: Operate time ≤0.4–1.0ms depending on source .

• Low Contact Resistance: ≤100mΩ initial .

• Wide Operating Temperature: -55°C to +120°C (one source) or -60°C to +155°C (another) .

• Long Electrical Life: Rated for 10⁷ operations under low-load conditions .

Technical Specifications