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RDL Line-Level Audio Controlled Relay - 0.5 to 5 s
Two multiturn trimmers are provided. The SENS potentiometer adjusts the audio input sensitivity. A threshold LED facilitates accurate adjustment. The module can be set to trigger on signals between 30 dBu and 0 dBu. The DELAY control sets the time required for the relay to release when the audio drops below the threshold. - Power Supply Not Included Dimensions 4.1 x 2.1 x 1.7 inches, Weight 1.6 ounces, Manufacturer RDL, model number Rank Electronics Audio Component Amplifiers 588, Is Discontinued No, Available May 6, 2011, Contact Type Dpdt, Brand RDL, Operation Mode Automatic, Coil Resistance 

Price is $96.00
Price: $96.49