WG 'Touch' Alarm Wireless External Curtain PIR

These Wireless External Curtain PIR's, create a very narrow detection beam (ideal for locating on balconies, in front of patio doors, in open outbuildings etc) without expanding away from the location.

Designed to work in conjunction with our WG 'Touch' Wireless GSM Alarm System, they have a 10 metre range, 100 degrees vertical & 10 degress horizontal detection pattern and a wireless range back to the receiver of 80 metres (line of sight).

When mounted vertically, they will creates a very narrow beam (ideal for protecting balcony applications & french doors), when mounted in a horizontal position, they create a wide detection pattern avoiding the ground and ceiling (ideal for buildings prone to small animals).

Being battery powered, they can be very easily installed into any location.

You can use up to 100 alarm detectors with the WG 'Touch' Wireless GSM Alarm System.

• 1 x Wireless Curtain PIR.
• 1 x Rubber Hood.
• 1 x Mounting Bracket.
• 1 x Set of Batteries.

• Size of PIR (without bracket): 120 (H) x 65 (W) x 40 (D) mm.
• Size of PIR (with bracket): 120 (H) x 65 (W) x 65 (D) mm deep with bracket.
• Detection Range:10 metres (distance).
• Detection Angle: 110 Degrees Vertical x 10 Degrees Horizontal.
• Power Suppy: 2 x AA Batteries.
• Battery Life: Approximately 6 - 12 months (normal use).
• Weatherproof: Yes (provided supplied hood is fitted).

Mounting the PIR Sensor:
The key to successful operation of any PIR sensor is choosing the correct location. A sensor mounted in a unsuitable location has the potential to cause false triggers and reduce performance. The main rules that should be followed are:
1) Mount the PIR into a corner of a room.
2) Avoid heat spots from bright lamps suddenly turning on or off.
3) Do not install immediately above a radiator.
4) Do not install in a glass roof conservatory.

How PIR's Work (passive infrared detector):
All PIR sensors detect changes in infra-red radiation, in the form of heat emitted by a number of bodies including people, cars and to a lesser extent, dogs or other small animals. The bigger the body, the more infra-red radiation isemitted and the easier it is for a PIR sensor to detect.
The field of view is the area in which changes in infra-red radiation can be detected. The field of view can alter with changes in temperature and the size of the heat source.
The construction of the PIR and Fresnel Lens divide the field of view into a number of zones both vertically and horizontally.