Tecpro Series 2 Power Supplies provide 24V DC to power small to medium sized intercom systems while terminating the audio lines with the correct impedance, enabling full duplex (simultaneous, two way) conversations to take place over extended cable runs. The 2A supply is capable of driving up to forty BP531 beltpacks and is protected by a compact, robust, extruded aluminium case designed to withstand the rigours of the live events environment. They are fully compatible with older Tecpro designs.