
22 496478
3. Installation
against which approval was granted. Note the approval label on the main
PCB.
REN
The Ringer Equivalence Number (REN) of the built in communicator is 1. As
a guide to the number of items of apparatus which can be simultaneously
connected to an exclusive line, the sum of the REN values should not exceed
4. A BT provided telephone is assumed to have a REN value of 1.
Safety Notice
CCT1
CCT2
CCT3
CCT4
CCT5
CCT6
CCT7
CCT8
OP3
OP2
OP1
12V
0V
TR
+
LS
12V AUX
0V
12V AUX
0V
A/T
CLK DATA
0V
12V
Telephone Line
Connections
RJ11
Connector
T.N.V. cct.
T.N.V. cct.
Wire-in comms Connector
S.E.L.V. cct
Main Connector
Battery Connector
S.E.L.V. cct
S.E.L.V. cct
Keypad Connector
S.E.L.V. cct
21VAC from
Transformer
S.E.L.V. cct
Figure 16. SELV and TNV Connectors on the 9750
Commenti su questo manuale