This listing includes 10 pieces of red DS318 12mm round push button reset switches without lock, rated for 3A at 125VAC, designed for horn doorbell applications. Key benefits Replacement for worn or failed doorbell buttons, restoring reliable operation. visibility red actuator helps you locate the button quickly. Without lock design provides a simple pushtoreset or momentary action, suitable for reset circuits or momentary control. Electrical rating of up to 3A at 125VAC supports common horn and control circuits. Compact 12mm diameter fits standard mounting openings and enclosures. Economical 10piece pack for multiple devices, spare parts, or project use. Key attributes Model: DS318 Size: 12mm round push button Color: Red Operation: Push button reset switch without lock (momentary) Electrical rating: 3A at 125VAC Quantity: 10 pieces Application: Suitable for horn doorbells and other compact electrical circuits requiring a reset or momentary input Use cases Doorbell replacement: a worn or nonresponsive doorbell push button in a horn doorbell system to restore the chime. DIY electronics: Implement as a momentary reset or input switch in microcontroller projects, control panels, or hobby electronics. Small appliances and panels: Use as a quick reset or test switch in compact devices or equipment with a 12mm mounting area.