PRESS-TO-TEST INDICATORS MEET OR EXCEED REQUIREMENTS OF MILL7961B and MILL3661 QPL APPROVAL: The products indicated have received Department of Defense certification and are listed as OPL approved. PROVIDE POSITIVE SAFETY FACTORS Positive safety factors are provided by patented built-in Press-To-Test indicators. Lamps can be checked instantly without removing them from their assembly. A slight pressure on the lens holder of the assembly breaks the normal circuit and makes a test circuit, informing the operator as follows: 1. If the lamp LIGHTS when pressed in, it is proven satisfactory. 2. If the lamp FAILS TO LIGHT when pressed in, it is defective and must be replaced from the front of the panel. Release of finger pressure restores the lens holder to operating position. Press-To-Switch (4 terminal assemblies) are available with all indicators in this catalog. They are useful for remote control applications, as they permit closing the circuit to any local or remote device. Typical Press-To-Test (3 terminal) and Press-To-Switch (4 terminal) circuit drawings are illustrated below. Sub-Miniature, Miniature and Large Press-To-Test Indicators are available for mounting in 15/32, 5/8" and 1 clearance holes respectively. Only typical incandescent assemblies are listed in this catalog. Data on other Press-To-Test assemblies will be furnished on request. Hot-stamped or engraved legends can be supplied on flat lenses only. Additional information will be furnished on request. Typical Typical 3 Terminal 4 Terminal Press-To-Test Press-To-Switch Circuit Circuit Ny ae a] oF Dialight reserves the right to make changes at anytime . in order to improve design and to supply the best product possible. PATENTED SHUTTER DIMMING ACTION Shutters closed Minimum indirect halo light Shutters open Maximum full direct light beam Shutters adjusted Adjustable direct light beam The patented shutter-dimming device is available on most Press-To-Test indicators. By turning the knurled cap, the individual operator can regulate the brilliancy of the light from the indicator to suit his needs under varying light conditions, Standard dimmer action is clockwise. Assemblies with counter-clockwise dimming action are available on special order. LENS COLORS 1Red 5White translucent 2Green 6Light yellow 3Yellow (amber) | 7Clear colorless 4Blue The digit before the last dash in the part number designates the lens color. When color other than RED is desired, change this digit to a figure noted above. Example: 812-1030-0972-506 (green) Sub-Miniature Incandescent PRESS-TO-TEST Indicators MILITARY STANDARD DRAWING MS25041 1 to 11 For back of panel mounting in 15/32 clearance hole Meet or exceed requirements of MILL7961B and MILL3661 T-1% bulb with midget flange base. See lamp ratings J. on page MATERIALS AND FINISHES Mounting Bushing and Lens Holder: Aluminum, black anodize finish. Mounting and Flange Nuts: Aluminum, black anodize finish. @ |nternal-tooth Lockwasher: Phosphor bronze, white nickel finish. 800 SERIES @ Terminals: Brass, hot tinned with elongated slot. 801 SERIES 808 SERIES Lens cap assembly marking: Dim with an arrow is die-stamped 809 SERIES and filled on all Dimmer lens cap assemblies. Press-To-Test marking is die-stamped and filled on all lens cap assemblies used with 3 terminal units only. BASE PART NUMBERS i Cap type Transparent lens color CAP PART NUMBERS for use with 3 terminal assemblies 4 terminal assemblies mechanical shutter semi-blackout . dimming 801 series _ Clear (Colorless) 801-0337-500 809-0337-500 809-0331-500 SEO MAX. 809-0332-500 ia 809-0333-500 809 series _ 809-0334-500 ~- 13/16 MAX. non-dimming C) 800 series 3 Clear (Colorless) 800-0337 -500 808-0337 -500 sn 808-0331-500 808-0332-500 d on ce BOD 808-0333-500 O 808 series | sovea Blue 800-0334-500 808-0334-500 3/4 MAX. .650 800-1030-0331-504 Non-Dimming 801-1030-0331-504 Dimming OPL LISTED 3 Terminal Press-To-Test Assemblies 4 Terminal Press-To-Switch Assemblies 3/32 X 9/16 ACROSS FLATS HEX NUT 3/32 X 9/16 ACROSS FLATS HEX NUT 1/16 PANEL (REF) 1/16 PANEL (REF) .018 +.005 X 19/32 +.020 0.D. .018 +.005 X 19/32 +.020 0.D. INTERNAL TOOTH LOCKWASHER INTERNAL TOOTH LOCKWASHER 3/32 X 9/16 ACROSS FLATS HEX NUT 3/32 X 9/16 ACROSS FLATS HEX NUT 15/3232 NS THD. MOUNTING BUSHING { 15/3232 NS THD. MOUNTING BUSHING 3/64 X 5/64 SLOTS 3/64 X 5/64 SLOTS nana ko) | =a PROJECTION BACK OF PANEL PROJECTION BACK OF PANEL max. panel thickness 5/16" max. panel thickness 5/16" COMPLETE ASSEMBLY PART NUMBERS Part number. MS number Part number 801-1030-0337-504 MS25041-1 809-1130-0337-504 | -0331 5041. 809-1 130-0331-504 809-1130-0332-504 809-1130-0333-504 809-1130-0334-504 801-1030-0334-504 MS25041-10 808-1 130-0337-504 808- 1130-033 1-504 808-1130-0332-504 1QS0- 808-1130-0333-504 800-1030-0334-504 MS25041-11 808-1130-0334-504 800-1030-0337-504 MS25041-5 Order complete with lamp to be assured of rceiving the indicator light and correct lamp together for immediate use. 5F