2 | D1257 Fire Annunciator
Wiring
The D1257 connects to the FACP through a standard
four-wire cable. The field wiring connects to a four-wire
harness supplied with the unit. This harness plugs into
a four-pin connector on the circuit board through the
back of the D1257.
Note
Use shielded cable where excessive
electromagnetic interference is a problem.
Technical Specifications
Environmental Considerations
Relative Humidity:
5% to 85% non‑condensing at +86°F (+30°C)
Temperature (operating):
+32°F to +122°F (0°C to +50°C)
Mechanical Properties
Color:
Red
Dimensions (H x W x D):
8.3 in. x 4.5 in. x 0.8 in.
(21 cm x 11.4 cm x 2 cm)
Material:
Molded ABS plastic
Power Requirements
Current:
104 mA minimum, 206 mA maximum
Voltage:
12 VDC nominal supplied by the control panel
Ordering Information
D1257 Fire Annunciator
D1257
Hardware Accessories
D54B Brass Flush Mount Kit
Back box and polished brass faceplate.
D54B
D54C Stainless Steel Flush Mount Kit
Back box and stainless steel faceplate.
D54C
D55 Keypad Desk Stand
Portable desk stand in smoke colored Plexiglas®.
D55
D56 Surface Mount Conduit Box
White surface mount box.
D56
D56R Red Surface Mount Conduit Box
Red surface mount box.
D56R
Americas:
Bosch Security Systems
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: +1 585 223 4060
Fax: +1 800 289 0096
security.sales@us.bosch.com
www.boschsecurity.us
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5600 JB Eindhoven, The Netherlands
Phone: +31 40 27 83955
Fax: +31 40 27 86668
emea.securitysystems@bosch.com
www.boschsecurity.com
Asia-Pacific:
Bosch Security Systems Pte Ltd
38C Jalan Pemimpin
Singapore 577180
Phone: +65 6319 3450
Fax: +65 6319 3499
apr.securitysystems@bosch.com
www.boschsecurity.com
Represented by
© Bosch Security Systems 2006 | Data subject to change without notice
F1295896075 | Cur: en-US, V2, 24 Jan 2006
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