The lightweight, portable PAMP-40 telephone amplifier automatically detects the best frequency band for your phone, making it compatible with 99% of modern telephones. Incoming sounds are amplified up to 30dB (decibels), and the "boost" button adds another 10dB! One year warranty.
Features:
Up to 40dB amplification
Tone control: bass -10dB max, treble -10dB max
Automatically switches on/off - voice detection
Easy setup and connection
Battery powered (9V battery not included)
Note: In-line amplifiers will not work with cordless telephones, Trimline telephones or telephones with a dial pad in the handset.
