BSTL Speech amplifier - Mod. 61 This BSTL Speech amplifier - Mod. 61 is fitted to the entrance panel on all current BSTL door entry systems. BSTL Speech amplifier - Mod. 61SKU: 419 £44.56 Regular Price£42.33Sale PriceQuantity*Add to CartAdditional informationThe unit provides two way speech and has individual volume control for both microphone and speaker. This universal product can be powered from either 12V AC or 12V DC depending on the model of telephone used. Dimensions: H 100mm x W 60mm x D 30mm
