A new wireless alarm system from Norelco (North American Phillips Corp., Consumer Products Div., 100 East 42nd St., New York 10017) is a combination burglar and fire alarm system, easily and quickly installed by any do-it-yourself homeowner or apartment dweller. There is really no installation other than mounting the small transmitting and sensing devices on each window and door to be protected, and mounting one or more smoke detectorn alarm units on the ceiling or upper part of the wall. Each small transmitting unit has a battery-operated transmitter that send a signal to a tabletop control unit when a windor or door is opened, or when the smoke detector senses the start of a fire.

The window transmitters come with small tracks that allow the window to be opened six inches without activating the alarm. The door transmitter has a "delay" setting that allows up to 20 seconds for occupants to leave or enter, an "instant" setting for use at night, and an "off" switch for the daytime. The control unit operates on house current, but has a backup battery to sound the alarm in case of power failure.

The Norelco Hom Patrol kit contains a control-receiver, one door transmitter, three window transmitters, and one ionization smoke detector. The suggested list price is under $300, and additional smoke detectors or transmitters are available to expand the system to fit any house or apartment. An optional car transmitter (plugs into the cigarette lighter) will sound an alarm if soneome opens the car door or tries to start it. Self-Storing Hose

Anyone who has used a water hose for chores around the outside of the house knows how awkward it is to coil up the hose and find a neat way to store it. A compact hose-and-reel system, just introduced by the Toro Co., 10901 Red Circle Dr., Minnetonka, Minn. 55343, solves this problem neatly. It is an unusual new type of extremely lightweight hose with a urethane inner and a woven fabric-type polyester outer cover. It is sold complete with a self-storing, cassette-like reel that squeezes all water out of the hose as you wind it up on the inside.

The reel, which measures about 11 inches by 13 inches, and is three inches thick, weighs less than four pounds with the 50-foot hose wound on the inside! The hose is 5/8 inch in diameter when full, and flat and limp like a piece of cloth when empty. It will withstand pressures of up to 450 pounds per square inch, temperature of zero to 160 F, and is highly resistant to sun, salt water, oil and abrasion. The hose unsnaps from the reel when in use, and the end snaps into a recess when the hose is to be wound back inside for storage. The 50-foot Toro hose lists for $29.99, and the 25-foot version for $22.99. Plastic Drill Pump

Unlike most drill-powered small portable pumps on the market, the Mighty Max has rotary roller vanes that will move several times as much liquid as an impeller pump, and pump air as well as most liquid - water, oil, garden sprays, solvents, and the like. Marketed by Matex Gear and Pump Company, 1055 Ralph Road NE, ATLANTA 30324, THIS COMPACT PUMP (FIVE INCHES WIDE AND FIVE INCHES LONG) WILL PUMP OVER 17 GALOONS PER MINUTE AT 2,000 EVOLUTIONS PER MINUTE, AND WILL PUSH WATER TO ALMOST 50 FEET IN HEIGHT. IT CAN BE USED TO INFLATE OR DEFLATE RUBBER BOATS, TOYS, OR AIR MATTRESSES, AND IT NEEDS NO PRIMING OR LUBRICATION. THE MIGHTY MAX ACCEPTS 3/4-INCH HOSE ON THE INLET AND OUTLET OPEININGS AND HAS NO RUBBER IMPELLER TO WEAR OR BURN OUT. IT COST $19.95 AND CAN BE ORDERED FROM THE ABOVE ADDRESS IF YOU CAN'T FIND IT LOCALLY. IONIZER

USING LESS ELECTRICITY THAN A 60-WATT BULB, THE MODULION IS AN AIR-IONIZING DEVICE THAT GENERATES NEGATIVE IONS IN THE AIR WITHOUT GENERATING EXCESS OZONE.

AVAILABLE FROM MICHAEL DAVIDSON, LTD., 225 WEST 86TH ST., NEW YORK 10024, THE MODULION MEASURES ONLY 5 1/2 INCHES BY 3 1/2 INCHES BY 3 INCHES AND IS CAPABLE IS IRONIZING UP TO 300 SQUARE FEET OF ROOM AREA. WHEN OPERATING IT CUTS DOWN DRAMATICALLY ON DUST AND IMPROVES THE QUALITY OF THE AIR BY HELPING TO ELIMINATE STALE OR OBJECTIONABLE ODORS AS WELL AS SMOKE, SOOT AND SMOG.IT PLUGS INTO AN OUTLET, AND ITS EFFICIENCY IS NOT LOWERED BY OPENING WINDOWS IN THE ROOM. MILDEW REMOVER

IDEAL FOR USE ON BATHROOM TILE AND GROUT, AS WELL AS ON VINYL CUSHIONS, PAINTED SURFACES, SHOWER CURTAINS AND OTHER SURFACES WHERE DAMPNESS AND LACK OF VENTILATION ARE CONDUCIVE TO GROWTH OF MILDEW, HERE IS A NEW SPRAY THAT REMOVES STAINS CAUSED BY MILDEW. MADE BY WHITE LABORATORIES, INC., ORLANDO, FLA. 32858, X-14 INSTANT MILDEW STAIN REMOVER DOES THE JOB WITHOUT NEED FOR SCRUBBING, WIPING OR EVEN RINSING OFF. IT WILL WORK ON ALMOST ALL SURFACES AND MANY MATERIALS, BUT SHOULD NOT BE USED ON FABRIC. THE 16-ONCE PUMP-TYRE SPRAY BOTTLE RETAILS FOR ABOUT $2.69, AND GALLON SIZE FOR ABOUT $9.95. CAPTION: Picture, Lightweight garden and utility hose from Toro rolls up inside reel for neat storage.