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.

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 cord. A 1-1/8" LCD display lets you set (16) programs over a 7-day period, plus a countdown mode and manual override. Has (2) 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.