Can be extended to 14 key, key content can be customized by 486 communication protocol with strong links to the electrical junction box. Zero-FireWire connection mode, frame material: zinc alloy frame color: bright chrome / Champagne / brushed gold / other custom panel Material: tempered glass / plexiglass LOGO: customized according to the hotel room number required: the perfect integration of fine silk The integration effect Working voltage: DC5V AC: 110-280V connection voltage: 12V or 220V products can be customized for a variety of large-scale hotel, KTV, senior clubs, intelligent home, and so on places. Samples usually 1-3 days, bulk generally 5-10 days.