About K3509 Loud Ringer

This versatile unit, in the same-sized case as our K3507 tone ringer, replaces the Type-C Alarm.
There is provision for two exchange lines via separate RJ11 sockets. Four different selectable alarm tones are
provided for each exchange line. All other connections to and from the unit are via screw terminals. Requires
K3505 horn speaker.
Other peripheral devices such as strobe lights, PIR sensors, doorbells, reed-relays, PA amplifier inputs etc can
be connected. Supplied with a 12V DC power supply which is also used to provide 12V power for strobe-light
operation.
The maximum volume of the Universal Loud Sounding Alarm in conjunction with our K3505 Horn Speaker is
110 dB. The unit has a REN of 0.1. Dimensions 115(W) x 155(H) x 35(D)mm.
Provides a loud alarm for incoming exchange calls, front door bell chimes and building entry alarm via a reed
switch or PIR sensor.

• One or two (parallel) 8 ohm speakers. You can use any speaker combination you want to, providing that the total
load is greater than 4 ohms.
• Up to six 12-volt 2-watt strobe lights.
• One 8 ohm speaker and up to two 12-volt 2-watt strobe lights.
• To the unbalanced 10K ohm auxiliary input of a P.A. amplifier.
• Any auxiliary device that can be driven by a set of dry contacts.

• Up to 2 exchange lines, each with its own set of four different selectable alarm tones.
• A front door push button - giving a distinctive “door-chime tone”.
• Passive infra-red sensors in either normally open or normally-closed configuration.
• Reed switches using either normally-closed or normally-open configuration.
• PBX system dry relay contacts.

To view Access’ extensive ranges go to: www.accesscomms.com.au
Sydney (Head Office) Unit 1, 29 Prince William Drive, Seven Hills NSW 2147 Phone: (02) 9414 8888 sales@accesscomms.com.au
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Melbourne Office 28 The Gateway, Broadmeadows VIC 3047 Phone: (03) 9330 8333 melbourne@accesscomms.com.au
Adelaide Office 71 Anzac Highway, Ashford SA 5035 Phone: (08) 8338 5540 adelaide@accesscomms.com.au
SPEAKERS
• A horn speaker (available separately) must be connected to the Universal Alarm to provide an audible output
• There is no in-built speaker
• Nominal horn speaker impedance is 8Ω and up to two 8Ω speakers can be connected in parallel
• It is possible to connect up to four 16Ω speakers in parallel. Remember that the total load must not be less than 4
ohms
• Maximum cable run is 15 metres
• A single speaker connected to the Universal alarm recorded “loudness” measurements
EXCHANGE LINES
• Connected via the two 6P6C sockets near the top left-hand side of the PCB. Only the two centre contacts (pins 3
& 4) are used
• Link J2 must be open
• Each line has four distinctive alarm-tones selected by dip-switches on the top righth and side of the PCB.
• The top two switches are for “Line 1” and the bottom two switches are for “Line 2”
• There are two alarm-test buttons below the switches.
• The left-hand button is for “Line 1” and the right-hand button is for “Line 2”.
•
DIRECT WORKING
Connect the PBX system dry contacts to screw terminals 3 & 10. Ensure link J1 is open
P.I.R. SENSORS AND REED SWITCH INPUTS
The device is connected to screw terminals 3 & 10
• 2V power for the PIR sensor can be supplied from terminals 3 (-12V) and 6 (+12V)
• If the device offers a “normally-closed” condition, link J2 must be bridged
• If the device offers a “normally-open” condition, link J2 must be open
• If the device is configured for “normally-open” condition, the position of link J1 determines the type of alarmsignal
tone:
• If J1 is bridged, the door-alarm tone is provided
• If J1 is open, the “Line 1” alarm-tones are used
• If the device is configured for “normally-closed” condition, the position of link J1 determines the length of time the
alarm sounds
• If J1 is bridged, a momentary alarm tone is heard
• If J1 is open, alarm-tone is heard as long as the device remains in its “operated” state
DOOR CHIME INPUT
• Independent of “Line 1” and “Line 2” inputs
• Has its own distinctive (non-changeable) tone
• The door push-button must be “normally-open”
• Link J1 must be bridged
• Terminal 3 (-12V) and 6 (+12V) can be used to power a light in the push-button
• The alarm-signal tone lasts as long as the button is pressed