An automatic door closer (more often called a "door opener") opens the door itself, typically under the control of a push button, motion detector or other device, and then closes it as well, typically employing a motion or proximity detector to determine when it is safe to close the door.
Dorma ED900-T-SW with an innovative electromechanical drive and state-of-the-art microprocessor motion control system, the ED900 is DORMA's most advanced low-energy swing door power operator. The operator is exceptionally quiet, safe, and easy to use. When operated manually, the ED900 demands little physical effort. Advanced power assist through the entire opening cycle makes even the heaviest-rated door feel light. The new operator is especially helpful for children, the elderly, persons with disabilities, or those carrying objects or pushing carts. This fully ADA-compliant device opens doors at precisely controlled speeds and forces, assuring safety for all users. The ED900 also includes a blow-open feature for smoke ventilation (per NFPA 92B), permanent hold-open, and an onboard power supply delivering 1.5 amps @ 24 VDC, which eliminates the need for a secondary power supply. It includes programmable options to accommodate even the most challenging door installations. In addition, the ED900 boasts the smallest footprint in the industry—up to 65 percent smaller than some other manufacturers' operators. Learn More$2,523.44
The Dorma ED800-T is "simple to install", “low energy” door operator that does not require external safety devices. The opening speeds and forces are tailored to meet the needs of the physically challenged. Opening force never exceeds 15 lbf. Closing time is never less than 3 seconds from 90º to 10º, nor less than 1.5 seconds from 10º to closed. DORMA has achieved a technological breakthrough an intelligent door closer, designed solely to provide safe, barrier free access. Learn More$2,617.88
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