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Unsupervised: Switched unsupervised:
1 Relay 1 4 Earth ground
2 Relay 2 5 Smoke detector
3 Relay 3
Input Points 1-4:
(supervised) Points are intended for connection of normally-open/normally-closed alarm
contacts. They may also be used for compatible two-wire smoke detectors. All EOL resistors
are 2.21 kΩ, P/N: 25899 Bosch, UL listed. Initiating devices are Class B, Style B or Class A,
Style D. Two‑wire Compatibility Identifier "A".
i
Notice!
For connection to listed power limited Class 2 or Class 3 sources only. Contacts rated at
5.0 A, 24 V.
i
Notice!
Smoke Power: 24 V, 1.0 A maimum (filtered).
For compatible devices, see also Technogram P/N: F01U0790.
Figure 5.5: Telephone lines 1 and 2
1 Phone Line 2 (supervised) 2 Phone Line 1 (supervised)
Fire Alarm Control Panels Connection | en 31
Bosch Security System, Inc. Installation and Operation Manual 2012.08 | 04 | F01U008458