SAFETY: This push-button switch is made of flame-retardant material to ensure maximum safety. Overload and overheating protection make your home safer. HIGH QUALITY: This door chime switch is made of high-quality tempered glass and plastic. This switch is durable, easy to maintain, not easily deformed or faded. Superior performance and smooth surface for constantly increasing tactile sensation. Usage: Suitable for home, hotel and other places. Size: 86 x 86 mm/3.38 x 3.38 in. FUNCTION: Type: 100% brand new Material: Tempered glass, plastic Color: as shown in the picture Voltage: 220~250V Maximum current: 16A Size: approx. 86*86 mm/3.38*3.38 in Package weight: approx 134 grams Package includes: 1 * door chime switch with screws Comment: 1. Due to manual measurement, allow 0-1 cm tolerance. Thank you for your understanding. 2. Screen display is not calibrated in the same way, object color shown in the picture may differ slightly from the actual product. Please check the actual product.