RF Person call transmitter (Lisa RF)

Do you regularly feel the need to page a hearing-impaired friend, colleague or fellow resident within the building?
Then the LISA RF Personen call transmitter is a good choice! One press of the button and the receiver alerts the person to your call with a flash or vibration signal, depending on the receiver used. The call transmitter is equipped with a selector switch for 10 channels. You will receive this person call transmitter including battery.