link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/12/123/1239/12390238.V0.jpg 400 250 https://www.joitos.com/item/28869096/Night%2DRinger - Responds to 90V ring signals or external contact closures- Produces dual-frequency electronic ringer tone- Easily connects to any paging system- Automatically mutes background music while ringing0- Ringer volume control- Compact size- Low current draw 93.77 USD 1 Electronics & computer--Phone & telecom--Other