Atkinson Dynamics AD 27AC Audio Intercom Module, Master, 120V AC, 25W, NEMA 4X, Wall Mount, Gray 29RC66 (1) Metal Box Measurement Type (1) Metal Box Measurement Type SAE Flex Socket Point Styles Included None Sockets Included (23) Standard 12 Point Finish Chrome Impact Rated No Tether Capable Tether Capable Standards ASME B107 Temperature Range 40 Degrees to 120 Degrees F Volume Control Product Type Audio Intercom Module Speaker Power 25 W Door Station Interface Call Buttons Operating Temperature Minimum 31 Degrees F Control Rank Primary Communication Style Push to Talk For Location Indoor UL Listed Type Master