Contacta STS-A31H-55 Window Intercom Amplifier and PS-55 Power Supply

The Contacta STS-A31H-55 combines the STS-A31H amplifier — a DSP-powered, full open duplex window intercom amplifier — with the PS-55 power supply, providing the core electronics for a complete Contacta window intercom speech transfer system. The STS-A31H amplifier delivers high-clarity, two-way communication through glass and security screens in banks, ticket offices, airports, theaters, and similar transaction window environments, and is compatible with the full range of Contacta speech transfer products.

Features

• Energy-Saving Mode : Automatically converts to green standby mode, which saves up to 80% of power
• High-Clarity Speech with DSP : Advanced Digital Signal Processing (DSP) transfers clear sounds between speakers and hearing loops
• Two-Way Speech Transfer : Enables smooth duplex audio transmission and clear voice transfer at counters
• Adjustable Loop Drive : A constant current loop drive with customizable options for the best sound
• Audio Input/Output for Recording : The separate audio line simplifies connection to external recording systems
• LED Power and Status Indicator : The green/red LED column displays clear power and status indicator notifications
• Durable and stylish Finish : Made of ABS plastic with a matte black texture for a sleek look
• Easy Power Switch : Includes a push-on/push-off switch for easy use at banks, post offices, and airports
• Reliable Power Supply : Uses a 2.1mm DC jack for continuous power supply