link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/29/299/2991/2991865.V0.jpg 400 250 https://www.joitos.com/item/3334120/Voice%2DActivated%2DRelay - Monitors audio activity over a wide range of input voltages- Two sets of C-form (both N.O and N.C) relay contacts respond to audio activity- Four levels of signals: microphone, 600-ohm line, 25V, and 70V speaker systems- Built-in balanced, low noise, high gain microphone pre-am- Transformer-isolated, 600-ohm small signal level output of detected audio available- Works with self-amplified or central-amplified paging systems- Separate microphone pre-amp gain control- Adjustable release delay: 0.25s to 25s- Trigger threshold adjustment- Relay active indicator light- Accessories: PRS40C 12V DC Power Supply (Sold separately) 121.52 USD 1 Electronics & computer--Phone & telecom--Other