BACK IN STOCK! - This outdoor infrared double beam senor type HA-70D by Aleph is a professional burglar alarm sensor. It has a range of 70ft. It uses invisible pulsed infrared beams and is self contained. Requires 10VDC up to 26VDC or 8VAC up to 18VAC for operation (maximum current requirement 27MA). When intruder interrupts the beam a SPDT relay contact operates - rated 0.5Amp @ 120VAC. Has green LED indicator for normal condition and red LED indicator for alarm condition. Size about 8.4" x 4.22" 3.4". Brand new in factory box with instructions and mounting hardware - retails for $100.
AVAGO blinding red SMD LED features clear lens, and a 2.8mm x 3.46mm case. Brand new on tape and reel. Part# QSMC-A143-5401J. Full factory reel of 2000 pieces. Sorry, we don't have any other data on these.
Low frequency crossover by Install Edge.com features switch to select 125, 80, or 50HZ. Has two trimmer adjustments for "min" and "max." Sorry, but we have no other specs, or data, on these. Size is 2.5" x 3.5" x 1" thick. New.
Giant 75 ohm adjustable resistor features an 11"L x 1.2"diameter body and a metal slider. The screw on the slider is loosened, and the slider is adjusted along the length of the resistor until the desired ohm value is obtained (0 to 75 ohms), at which point the slider is tightened down again. Looks like it's a 100 watt rating, but we are not sure. Marked CTG9809 AAA617K19, 75 ohm 10%. New.
Compact panel mounting keylock switch features SPST contacts rated 1amp @ 125VAC. Key can be removed in either position. Lock mounts in a 0.5" hole with included nut. Comes with 2 keys. Size about 1"L x 0.45"diameter.
Omron deluxe adjustable time delay relay part# STPMYHAH operates on 120VAC, provides one instant contact closure, and one time delayed contact closure - adjustable from a knob on top from 0 to 60 minutes. Contacts are rated 3amp 220VAC 50/60HZ (non inductive load). Size is 3" x 2.4" x 2". Designed to panel mount. Has standard 8 pin octal base (use G20381 socket). Retails for over $130.
Tiny vibrator motor is only 14mm in diameter and 3.5mm thick. Fully enclosed with 23mm(L) flexible leads to connect power. Operates on 1.5VDC up to 4VDC and produces a nice vibration. Perfect for making tiny robots. Approximate resistance 53 ohms.
This is a miniature gearhead with a ratio of 141:1. It is 16mm in diameter x 22mm long. It was made by Portescap, and has a 6mm(L) x 3mm diameter(D) shaft. Part# is B160141. Miniature gearhead only (no motor included). Brand new - worth over $100. Data sheet available online - type in "Portescap B16 gearhead."
Electronic alert pulsates an electronic tone about once per second. Operates on 6VDC up to 16VDC. Panel mounts in a 1.1" hole using supplied mounting ring. Size 1.68" diameter x 1.28" deep, excluding terminals. Brand new.
Ledtech LY11BE-G yellow green backlight panel lights up a beautiful even glow, when 4.8VDC is applied. Uses 42 SMD LED chips inside a 3.67"L x 0.96"H x 0.2" white sealed display case. Has 2 color coded leads for hookup, and 2 thin black bumper edges as shown. Requires 3.8VDC up to 4.8VDC @ 210mA. Luminous intensity is about 230 cd/m². Dominant wavelength is 571mm.
Powered PSF-125-24 compact switching power supply operates from 90VAC up to 264VAC 47 to 63HZ. Output is a regulated 24VDC at up to 5.2Amps. Size is 76mm x 127mm x 30.5mm. Brand new in factory box. Retails for $59.95.
Ledex™ 12VDC miniature tubular solenoid pushes 1"L plunger pin. Size of solenoid about 1"L x 0.5"diameter. Has ?" threaded bushing for panel mounting. Our tests indicate the pin can push out 0.4". Has 1"L insulated wire leads. Comes with mounting nut. Coil resistance is about 48 ohms and requires about 250mA to operate.
These interesting glass Geiger tubes type, DOB-50, were made in Poland during the Cold War. They operate on 390-490V, the plateau length is 50V, and they detect beta and gamma radiation. Size 70mm(L) x 10mm(diameter). Even though these are new in a box, we test each one to make sure that it is perfect. Here in Arizona, the background click from this is one or two counts per minute. This tube works great with C6800 geiger counter kit.
Bright green 4 LED array type 551-0607-004 by Dialight mounts at a right angle on PC boards. Operates on 3VDC @ 10mA. Viewing angle is 60 degree, and wavelength is 565mm. Lens is green diffused. Brand new factory package of 5 arrays.
These new items came from a science summer camp. Consists of a bag of over 100 pieces that can be snapped together to form moving robots, sculptures, structures, etc. Comes with snap together figure as shown. Requires 2AA batteries (not included) for gear motor. Not for children under 3 due to choking hazard. Fun gift for creative people!
Beautiful polished on one side 200MM silicon wafers made for semiconductor industry. These are polished to a beautiful copper colored mirror finish on one side and unpolished on other. They are a work of art and can be mounted on a wall to look like a beautiful mirror. Great for art projects, experimentation, university class studies, etc. Comes in the original heavy duty container (which probably cost the factory more than our selling price for the wafers). Full factory case of 25 new wafers. Sorry, no spec sheets or other data. Note, each wafer has tiny notches as shown (these are part of the manufacturing process).
Nice quality super handy 3 in 1 magnetic pick-up tool features a laser pointer, a white LED light, and a telescopic 24” (when fully extended) shaft with a 3.5lb (pick-up strength) super magnet on end. Very handy for retrieving lost screws, hardware, and nuts from hard to reach places. Has a handy pocket clip and makes a great pointer for lectures. Brushed metal body with included batteries already installed. Sold in retail package -makes a great holiday gift.
Nicely made drill press has 3 selectable speeds ranges by way of a belt and aluminum pulleys, plus a variable speed control for each range, and a die cast aluminum base. Has handy feed lever with depth indicator, adjustable head height on heavy duty column, and adjustable collet for bits up to 1/4" diameter. We use this drill press for drilling PC boards here at the Goldmine and it is able to make the smallest holes in our PC boards with great accuracy. This compares to mini presses over $200! Operates on 110VAC 50/60Hz. RPM ranges 5000, 6500, and 8500. Size of base 6-3/4" square, max height 6", and maximum throat depth 4-3/8". Brand new in retail box. G17382
Cable tester for networks consists of a removable remote and main unit. Requires one 9V battery (not included). Tests for opens, shorts, crossed wires, etc. Both the main unit and remote unit have 8 LED indicators and built in cat5 (RJ45) sockets and BNC connectors. Brand new with instructions and zipper case.
Our Slowest Ametek Pittman 77776:1 Ratio Gearhead Motor
High torque super slow gearhead motor operates from 3VDC up to 24VDC. Gear ratio is an incredible 7776:1. We have never had such a slow rotation high torque motor - at 6VDC the shaft rotates 1 revolution in 4 minutes. With no load the current requirement is 160mA at 6VDC. Size is about 4” long x 1.5” square. Shaft is 0.5” long x 0.31” (8mm) diameter. New with flexible insulated wire leads. Retails for over $200.
This 6 piece set of precision screwdrivers feature spin handles with rubberized grips and good quality precision made tips for tough jobs. You get 3 phillips: 00, 0, & 1 plus 3 slotted: 1.4mm, 2.4mm, & 3.0mm. Set includes handy storage box. We use these here at the Electronic Goldmine and are amazed at how well they work. G15627
Handy Combo 4 in 1 Pocket Screwdriverfor Iphone 5 and XBox
Pocket screwdriver for Iphone 5, XBox, and other high tech electronics features 4 different bits: (1) phillips PH00, (1) 3-S5x50 straight, (1) 0.8-S5x50 star, and (1) T8 torx. All bits are contained in a small pocket clip handle. New!