Velleman SV_PSL2 - Manuel (Page 3)

Simultaneously, the installation finished, the back-up battery is in recharging
situation, (about 6 hours the back-up battery will be fully charged), if your alarm
system activated, the SV/PSL2 will be also activated synchrony, the siren and strobe
activated at the same time, if the wire of the SV/PSL2 be cut or the SV/PSL2 be
removed from the bracket, the back-up battery will be supply the power for activating
siren to shock the intruder to stop his criminal action. (For saving the power of back-
up battery, this function only with siren but strobe.)
The following is the block diagram of the SV/PSL2 for reference :
Strobe
Siren
Auto
Control
N.C.
Tamper output (-)
Power (-)
Power (+)
Siren & Strobe Synchro-active (+)