We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White wireless driveway alarm kit with two wall-mount motion sensors and a plug-in receiver

Emerson 0256-0258 Wireless Driveway Alarm 328 ft 2 Sensors 1 Receiver 38 Chimes

SKU CH-WZMJ-0MPTN

Wireless motion sensor kit with two PIR detectors, one plug-in receiver, 328-foot range, and 38 selectable chimes

  • Product colorWhite
  • Details3.15 L x 3 W x 1.3 H inches, 328 ft, Wall Mount, Battery Pow
  • Key featuresWall Mount, 328 ft, true
  • Product dimensions14.33 in W × 12.83 in H × 9.06 in D
  • Detects motion up to 328 feet away
  • Choose from 38 chime tunes with LED alert
  • Wire-free wall mount setup in minutes
  • Adjustable 15 to 30 second alert delay
  • Two sensors pair with one plug-in receiver

Product Identity

The Emerson 0256-0258 wireless driveway alarm uses infrared motion sensors to send alerts up to 328 feet to a plug-in receiver. It suits homeowners and small-business owners who want wire-free perimeter awareness without a full security system. Buyers needing video recording, smartphone integration or weather-proof outdoor sensors should look elsewhere.

Bundled Extras

Two PIR sensors and one receiver arrive with mounting hardware so multiple entry points can be covered from a single chime unit. The receiver offers 38 selectable chime tunes and an adjustable-volume mute mode that flashes its LED instead of sounding. Sensors require three AAA alkaline batteries each, which are not supplied.

Installation Reality

Sensors mount on walls with included brackets and the receiver plugs into any standard outlet for immediate power. Pairing additional sensors to the receiver is supported for multi-room coverage. The only common friction point is remembering to buy AAA batteries before mounting the sensors, and the units are not waterproof so they must be sheltered from rain.

How it compares

Measured against everything we stock in Alarm Kits & Motion Sensors, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 66% of the 180 comparable items (median $30.99).

Specifications

Product
Brand nameEmerson
Model name0256-0258, motion sensor alarm
Part number0256-0258
Product colorWhite
Size & build
Product dimensions14.33 in W × 12.83 in H × 9.06 in D

Questions about this item

How often will the 3 AAA batteries in each sensor need changing?

Battery life depends on how many times the PIR detects motion each day; with the adjustable 15 to 30 second alert delay, typical home use gives several months before replacement.

What limits continuous detection when the sensor is triggered repeatedly?

The configurable delay between alerts can be set from 15 to 30 seconds, so rapid movements closer than that interval will not sound another chime.

Does the plug-in receiver get warm or make noise during all-day operation?

The receiver plugs into a standard outlet and runs silently; it only produces sound when a chime plays and the LED flashes, with no noticeable heat build-up.

More in Alarm Kits & Motion Sensors

Similar items