AP® Airstream Relay Box #E100‑A1095 is engineered to streamline barn climate control by enabling one ventilation controller to manage multiple curtain machines. Ideal for commercial livestock facilities, it supports up to four actuators simultaneously—ensuring synchronized curtain operation to maximize airflow efficiency.

Perfect for ventilation retrofits or new installations, this relay box ensures clean, reliable multi-machine control—without needing to run extra signal wires or upgrade your controller.

Key Features:

• Expand your system to control up to 4 curtain machines

• Supports 120 VAC control signals (50/60 Hz)

• Durable SPDT relay outputs rated for 5 A

• Houses in a weather-resistant enclosure for barn resilience

• Includes installation and operation manual

• Works with Airstream, GSI, AP® curtain systems.
• Wall or control panel installation.