
Communications Systems | PVA-1KS PAVIRO Key Switch
PVA-1KS PAVIRO Key Switch
www.boschsecurity.com
u EN 54-16
u Locks unauthorized Call Station use
u Supervised
The PVA-1KS is an optional key switch for installation 
in the PAVIRO call stations. The feed lines of the key 
switch are monitored for short-circuits and 
interruptions. For more information, see the call 
station manual.
Certifications and approvals
EN 54-16: 2008
Installation/configuration notes
Assembly in call station
1. Disconnect the call station from all connectors
2. Unscrew the call station baseplate
3. Unplug the connection cable from the CN1 plug 
connector
4. Prepare the installation location. Use a sharp object 
(knife, scriber, or similar) to carefully punch through 
and cut out the pre-cut circle on the back housing. 
Perform any follow-up work that may be required to 
the installation location (e.g. filing, trimming)
5. Bore through the pre-cut side opening for the holding 
pin of the key switch cover
6. Align the switch and screw tightly in place with the 
supplied knurled screw
7. The supplied 4-pin cable and the resistors must be 
connected as shown in figure 2.1 or 2.2, depending 
on the intended purpose of the key switch.
Notice
Connect the key switch as shown in figure 2.1 
(normally closed contact, NCC) to lock the call 
station via the key switch!
8. Note the connection sequence of the ribbon cable. 
The two external cables 1 (red) and 4 (green) must 
be cut as close to the cut-off point as possible and 
isolated. The two internal cables 2 (green) and 3 
(green) must be soldered to switch connections 3 
and 4. The polarity is not important.
9. Depending on whether the right/middle/left 
installation location will be used, plug the ribbon 
cable into plug connector CN201/CN202/CN203 on 
the circuit board
10. Plug the connecting cable into CN1 again
11. Re-attach the call station baseplate
12. Attach the connections
13. Configure the key switch in IRIS-Net

R2
10k
1 rt
2 gr
3 gr
4 gr
CN1-4
CN1-3
CN1-2
CN1-1
1
2
R1
10k
3
4
R2
10k
1 rt
2 gr
3 gr
4 gr
CN1-4
CN1-3
CN1-2
CN1-1
1
2
R1
10k
3
4
2 | PVA-1KS PAVIRO Key Switch
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Bosch Security Systems, Inc. 
12000 Portland Avenue South 
Burnsville MN 55337, USA 
Phone: +1-800-392-3497 
Fax: +1-800-955-6831 
audiosupport@us.bosch.com 
www.boschsecurity.com
Bosch Security Systems B.V. 
P.O. Box 80002 
5617 BA Eindhoven, The Netherlands 
Phone: + 31 40 2577 284 
Fax: +31 40 2577 330 
emea.securitysystems@bosch.com 
www.boschsecurity.com
Robert Bosch (SEA) Pte Ltd, Security 
Systems 
11 Bishan Street 21 
Singapore 573943 
Phone: +65 6571 2808 
Fax: +65 6571 2699 
apr.securitysystems@bosch.com 
www.boschsecurity.asia
Bosch (Shanghai) Security Systems Ltd. 
201 Building, No. 333 Fuquan Road 
North IBP 
Changning District, Shanghai 
200335 China 
Phone +86 21 22181111 
Fax: +86 21 22182398 
www.boschsecurity.com.cn
Robert Bosch Ltda Security Systems Division 
Via Anhanguera, Km 98 
CEP 13065-900 
Campinas, Sao Paulo, Brazil 
Phone: +55 19 2103 2860 
Fax: +55 19 2103 2862 
latam.boschsecurity@bosch.com 
www.boschsecurity.com
© Bosch Security Systems 2015 | Data subject to change without notice 
18889691403 | en, V2, 27. Jul 2015
Connecting the key switch as normally closed contact 
(NCC) for key lock function
Connecting the key switch as normally open contact 
(NOC) for special purposes
Parts included
Quantity Component
1 Key switch
1 Preconfigured 4-pin connecting cable
2 Resistor 10 kΩ
1 Installation note
Ordering information
PVA-1KS PAVIRO Key Switch
Order number PVA-1KS