A-A-51810
4 February 1987
COMMERCIAL ITEM DESCRIPTION
TIMER, INTERVAL
The General Services Administration has authorized the use of this commercial item description.
This commercial item description covers one type of interval timer for laboratory use.
Salient characteristics:
Shall be an electrically powered, four-channel timer controlled by a quartz crystal for accuracy consisting of three countdown timing channels and a fourth channel which shall display the time of day.
The countdown timing channels shall be capable of being set from 20 hours to one second. Each channel shall have a distinct tone and visible alarm which sounds and blinks until it has been shut off. Channel displays shall be 13 millimeter high LED display digits and shall operate on 120 volts A.C. at a frequency of 60 Hertz. The unit shall be approximately 2 inches (5.0 cm) high by 7 inches (17.5 cm.) wide by 4 inches (10.0 cm.) deep and housed in an ABS plastic case. Each unit shall have operating instructions which are neat and legible. Shall be in conformance with Underwriters Laboratory Standard 1222.
Workmanship. The interval timer shall be free from defects which detract from their appearance or impair its serviceability.
Unit. Each (EA). One interval timer, as specified, constitutes one unit.
Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contact or purchase order, the contractor may use his own or any facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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