TechZone Service provides system design, wiring, professional installation and service for your new or existing doorbell system or single-family intercom. Today’s system can be as simple as when a visitor presses the button, the intercom rings your telephone with a distinctive ring to alert you. More advanced residential intercom systems can be integrated into a PBX or audio system and when combined with a miniaturized camera allow you to view your visitor while talking to them through your telephone. Certain models allow for door or gate release with the push of one button. Whether your inside the house or enjoying an afternoon in the yard with family and friends, you won’t miss that important person or delivery.