Paging-Loud Ringing Amplifier for Key Phone. The M2W is designed to amplify the paging announcements and ringing tones of key system telephone speakers in noisy areas. The M2W can also be used to boost the paging capacity of other paging amplifiers. The M2W comes complete with one 25AE 8 ohm paging horn, an amplifier and a plug-in transformer. Applications Amplify key phone paging and ringing Add speakers to fully loaded paging systems Features Adjustable volume control Powers up to three 8 ohm speakers Screw terminal connections Power supply included One weather resistant 25AE paging horn included Optional additional 25AE paging horns or 30AE ceiling speakers available 1 year warranty Made in the USA.