This is a New Uponor A3023522 Thermal Actuator 24V 1W 4-Wire. It is designed for 24V AC/DC thermal actuator applications and compatible use with Uponor four-wire systems. • Manufacturer Part #: A3023522.

The SIEMENS GND221.1U A.C. 120V Electronic Fire and Smoke Damper Actuator is a metal unit designed for direct mounting in HVAC systems. With a length of 8 inches, height of 2.5 inches, and width of 3 inches, this hard-wired damper actuator is compatible with Siemens products and operates at 120V. Manufactured in the United States, this unit weighs 1 pound and is specifically designed for controlling fire and smoke dampers in industrial and commercial settings.

The Honeywell MS3105J3030 Spring Return 44 lb-in. 5 Nm Direct Coupled Actuator is a reliable and efficient solution for HVAC applications. This UL 873 approved direct coupled actuator offers a torque of 44 lb-in and operates on a voltage of 24V with a frequency of 50 Hz or 60 Hz. With a fail-safe mode of spring return, this Honeywell model ensures smooth and safe operation. Additionally, it includes a mounting bracket and self-centering shaft adapter for easy installation. The wide operating temperature range of -40 F to +150 F and 5 to 95% RH non-condensing humidity range make it suitable for various environments.