Our VP for Sensing Fluid Pressure called this sensor from Kavlico “sweet.” Needs a 5VDC 20mW power source, and will likely put out 0-4VDC, contingent on pressure, from 0-5"/H2O max, we’d say. Measures 1-5/16" x 17/32" on a pair of 7/8" long 5/32" slotted mounting wings. The upper 3/16" OD barb is the low side, and the lower is (ironically) high. Has a 3-pin connector with legend on the back for power and output. Call for a data sheet.

It's a nonpolarized bimetal heat sensor, 1/2" long with rubber sleeves and 6" long leads. It's also mysterious, because when used as a thermocouple multimeter input, it reads approx 94° in nearly boiling water but approx 170° in ambient air. Wethinks some sort of inversion or scaling is going on, but a person with your smarts will surely figure it out.

This 4" x 3-3/4" x 1-3/4" medical take-out air sensor has (3) ports coming off the main 3-1/8" x 3/4" ID chamber, (2) leading to one sensor and the other leading to a second one, then through circuitry on a mounted PC  board leading to a 10-pin output connector. Also has a PCB-mounted 3V coin cell battery. The sensors have input, output and trigger voltage and a voltage output, but we have no specs. Nice parts and pieces, though.

How many what? Well, whatevers, as long as you can count them, which you’ll be able to do with this 24VDC, 1.7W, 6-digit, pulse-activated, non-reset counter. In a 7/8” x 1” x 2-3/8” clear acrylic case with a mounting arm and a quick-disconnect terminal on 4” leads.

You need a tough timer. This 120V 15A dual-outlet heavy-duty digital timer from GE™ is made for outdoor use (think Santa and all those illuminated reindeer). Has a 5-5/8" x 3-1/8" x 1-3/4" weather-resistant housing on a 4” pigtail. A 1-1/8" LCD display lets you set (16) programs over a 7-day period, plus a countdown mode and manual override. Has (3) grounded outlets and can be used with CFL and LED fixtures. UL.

Use this handy kit to replace a standard wall switch with a digital timer and motion sensor. Can handle up to 8A or a 1HP motor at 120VAC, and can be programmed for a full week. Includes (infrared) remote sensor with a 120-degree coverage angle at up to 80 feet (needs 3 “AA” batteries). Can also be set for dawn or dusk times with a manual override, countdown mode, or a random mode to interact with a timer and swing up to 30 minutes either side. Includes a mount for the sensor, (2) different face-plates and wire nuts. UL.

Let the burglers think you’re home even when you’re lounging on the beach in Maui. (You just pictured a wide-brimmed hat and a drink with an umbrella in it.) This plug-in electromechanical timer from Defiant® will turn your lights on and off while you’re vacationing, at work or otherwise not home on a regular basis. Will also turn your fans on and off while you sleep. Rated for 15A (10A for a tungsten lamp) at 120VAC, it has a polarized non-grounded outlet and is for indoor use only. Pull the pins up to set any half-hour cycle you like. Couldn’t be easier. Measures 3" x 2-5/8" x 1-3/4". UL.