All paging functions and for site operation can be pre-programmed, such as zone buttons, zone groupe buttons, zone paging, message triggering, feel control, pre/post chime, plus several settings such as selection of using built-in or external mic/speaker, built-in mic/speaker volume, gooseneck mic calibration etc. can be adjusted via DPM-T5/DPM-T5F. Moreover, password protection make the DPM-T5/DPM-T5F a versatile device that fits well in a commercial shopping center or an industrial high-security facility. The DPM-T5/DPM-T5F is also an eco-friendly products with extremely low power consumption (1 W) during standby mode.