General Features; Tamper Protection - Tyco NEKA Series Installation Instructions Manual

General features

 Self-powered microprocessor controlled horn with strobe/flash for outdoor applications.
 New design.
 Strong weatherproof plastic material moulding.
 Tropicalized-steel innerplate.
 4 audible and visual signal inputs.
 Modulated frequency sound emission with sound options.
 High output magnetodynamic exponential horn with test circuit.
 Protected against tamper, wall tamper, flash bulb damage and wire cutting.
 Foam tamper device (NEKA-F and NEKA-FS only).
 Programmable maximum alarm time.
 Battery test circuit with flash shutdown under low battery or battery trouble conditions (NEKA and NEKA-F only).
 Drilling pattern for easy installation.
 Houses 12 V, 2 Ah, buffer battery.
Box
The hard wearing plastic moulding is resistant to the most adverse weather conditions. The louver grille has been especially de-
signed to protect the internal components against rain while epitomising sound emission. The tropicalized-steel innerplate provides
extra protection against acts of delinquency.

Tamper protection

The tamper device (must be anchored to the wall) triggers alarms when either the frontplate or innerplate is removed, or when the
siren is pulled from the wall (wall tamper). The foam tamper protection (NEKA-F and NEKA-FS only) comprises an active in-
frared barrier with a dual detector that provides high immunity to false alarms (caused by insects).
The siren can operate in normal or automatic mode. In normal mode, the siren opens the AS and ASG terminals when tampered.
These terminals have to be connected to control panel tamper line that activates the siren (and other types of signalling, depending
on requirements) through +N, AF, A or F terminals.
In automatic mode, the siren independently activates the acoustic and optical signalling for tamper events: AS and ASG terminals
do not need to be connected to tamper line but the control panel do not know the siren tamper status. In automatic mode, the tamper
alarm ends when 40 seconds after all causes have been removed, or when maximum alarm time elapses.
Activation
The siren can be activated by the tamper device, and by +N, AF, A and F terminals. For example: the siren activates when the
voltage fails on terminal +N. This operating mode allows the siren to detect wire cutting, as this terminal also supplies the power
and battery charge. The polarity programmable AF, A and F terminals can be used for connection to other devices.

The siren blocks for 4 minutes if receive most then 6 activating requests in 4 minutes. This is to protect against control panel
malfunctioning.
Signalling
The audible and visual signals on the loudspeaker and strobe/flash depend on the type of alarm, and the alarm signal configuration.
The sound modulation extremes generate a fastidious shrill tone — intended to discourage intruders, and a low tone — to ensure
good audibility. It is possible to select two audible signals patterns for alarm Inputs — with the exception of the internal tamper event
which has only one audible signal (up-scale modulated frequency between 800 and 2000 Hz). The audible signals and modulated
frequency range can be found in "Setting the operating mode" on page 7. There are two frequency ranges: 800/2000 Hz and 1100/
2400 Hz. The audible signalling will stop as soon as the maximum alarm time expires, whereas, the visual signalling will continue
until the alarm conditions clear (memory flashing).
4 Outdoor Self-Powered Siren