The Videx VR120/136-7 is a seven-button audio door panel from the VR120 series, fitted with the traditional 4+1 Art.136 audio amplifier. Its 12 gauge 316 stainless steel face plate measures 120 mm wide by 280 mm high and is secured with M5 countersunk stainless steel security screws, with a neoprene seal to keep out dust and liquid. IP68 rated buttons can be specified with an optional yellow bezel for high contrast, and each button is deep engraved with 6 mm in-filled black characters. Call progress LEDs for speak, busy and door open work alongside distinct reassurance tones to guide the visitor. Speaker and microphone volumes are adjusted independently with two potentiometers on the 136 amplifier, and speech time and lock release time are also adjustable.