D8125 - Detector BOSCH - Free user manual and instructions

Product Type	Recessed Magnetic Contact
Brand	Bosch
Model	D8125
Dimensions (Body)	1.5 in x 0.5 in (38 mm x 13 mm)
Magnet Dimensions	0.7 in x 0.3 in (18 mm x 8 mm)
Weight	Approx. 0.3 oz (8 g)
Power	Passive (no external power required)
Switch Type	Reed switch (Form A, normally open or closed)
Maximum Gap	0.75 in (19 mm)
Wire Length	12 in (30 cm) pigtail
Mounting	Recessed in door/window frame
Compatible Panels	Bosch security systems (B8512G, B9512G, etc.)
Operating Temperature	-30°F to 150°F (-34°C to 65°C)
Tamper Protection	Not included (use with panel tamper)
Maintenance	Clean with dry cloth; check wiring periodically
Safety	Low voltage (Class 2) device; follow local codes
Spare Parts	Magnet and contact assemblies available
Repairability	Non-serviceable; replace if defective
Warranty	Limited 5 years

Frequently Asked Questions - D8125 BOSCH

What is the Bosch D8125 used for?

The Bosch D8125 is a recessed magnetic contact used for detecting the open/close status of doors and windows in security alarm systems.

How do I install the D8125?

Drill a 3/4-inch (19 mm) hole in the frame for the contact and a smaller hole for the magnet. Route the wires to the alarm panel and connect as per the wiring diagram (normally open or closed). Secure the contact and magnet with screws.

What is the maximum gap between the contact and magnet?

The maximum recommended gap is 0.75 inches (19 mm) for reliable operation.

Is the D8125 compatible with third-party panels?

The D8125 is a standard reed switch and can be used with most alarm panels that accept normally open or normally closed loops, but compatibility should be verified with the panel specifications.

How do I wire the D8125?

The D8125 has two wires. Connect them to the alarm panel's zone input. For a normally closed (NC) circuit, use the NC contact; for normally open (NO), use the NO contact. Refer to the manual for polarity if required.

Can I use the D8125 outdoors?

The D8125 is designed for indoor use on windows and doors. For outdoor applications, choose a weatherproof magnetic contact.

What is the operating temperature range?

The operating temperature is -30°F to 150°F (-34°C to 65°C).

How do I test the D8125?

Connect the D8125 to a multimeter set to continuity. With the magnet near, the circuit should close (or open depending on configuration). Separate the magnet to verify the opposite state.

Do I need a tamper switch with the D8125?

The D8125 does not include an internal tamper. Use a panel tamper or a separate tamper switch if required by regulations.

What if my D8125 stops working?

Check wiring connections and alignment. If the reed switch is faulty, replace the entire contact assembly. Spare parts are available from Bosch distributors.

USER MANUAL D8125 BOSCH

D8125 Addressable Expansion Module

www.boschsecurity.com

BOSCH

Invented for life

Green printed circuit board with various electronic components and connectors (no readable text or symbols)

The D8125 Addressable Expansion Module works with the D9127U or D9127T POPIT Modules to provide multiplex technology that combines zone or point supervision with individual device addressing on one pair of wires. Use the D8125 to provide expansion beyond the standard number of control panel zones, up to a total of 238 points. Each D8125 module can fully supervise 119 D9127U or D9127T POPIT Modules.

System overview

Each D8125 installs in the control panel enclosure or in an adjacent approved enclosure. Future system expansion is very economical as D9127U or D9127T POPITs can be spliced in anywhere along the two-wire data expansion loop from the D8125 module.

The D9127 is a compact, addressable device that is suitable for applications where specifications call for point identification from each initiating device or series of devices. The units are small, and easily installed in standard outlet boxes, above false ceilings, closets, or other accessible locations.

The D8125 includes a 33 kΩ end-of-line (EOL) resistor. Install the resistor at the farthest point on the loop for proper supervision.

Certifications and approvals

Australia C-Tick

• Provides point identification of initiating devices
  ▶ Supervises wiring to devices for circuit integrity
  ▶ Expands the number of points in the system
  ▶ Compact size
  ▶ Terminal connections for reliability

Region Certification

USA UL AMCX: Central Station Alarm Units(UL1610, UL1635), AMCX7: Central Station Alarm Units Certified for Canada (cULus), AOTX: Local Alarm Units (UL464, UL609), AOTX7: Local Alarm Units Certified for Canada (cULus), APAW: Police Station Alarm Units (UL365, UL464), APAW7: Police Station Alarm Units Certified for Canada (cULus), APOU: Proprietary Alarm Units (UL1076), APOU7: Proprietary Alarm Units Certified for Canada (cULus), NBSX: Household Burglar Alarm System Units (UL1023), NBSX7: Household Burglar Alarm System Units Certified for Canada (cULus), UOJZ: Control Units, System (UL864, 9th edition), UTOU: Control Units and Accessories - House-hold System Type (UL985), UTOU7: Control Units and Accessories - House-hold System Type Certified for Canada (cULus)
	FM
	CSFM California State Fire Marshal (see our website)
	FDNY-CoA 6174
	FDNY-CoA 6059 [D9412GV3 & D7412GV3]

Region Certification

	NYC-MEA	12-92-E, Vol. 12 12-92-E, Vol. 12
	NYC-MEA	12-92-E, Vol. 15 12-92-E, Vol. 15
	NYC-MEA	12-92-E, Vol. II 12-92-E, Vol. II
Canada ULC AMCX7.S1871 - Central Station Alarm Units Certified for Canada
	ULC S303 - Local Burglar Alarm Units and Systems
	ULC - Police Station Connected Burglar Alarm Units
	ULC APOU7.S1871 Proprietary Alarm Units Certified for Canada
	ULC ULC-ORD C1023 - Household Burglar Alarm System Units

Installation/configuration notes

Compatible Control Panels

• B9512G/B9512G-E
• B8512G/B8512G-E
• D9412GV4/D7412GV4/D7212GV4
• D9412GV3/D7412GV3/D7212GV3
• D9412GV2/D7412GV2/D7212GV2
• D9412/D7412/D7212
• D7212B1
• D9112/D9112B1
• D8112G1/D8112G2
• D9124

Parts included

Quantity Component

1 Expansion board

1 Hardware pack

1 Literature pack

Technical specifications

Properties

Dimensions: 13 cm x 8 cm x 2 cm (5 in. x 3 in. x 0.75 in.)

Power Requirements

Current Draw: 50 mA for each D8125 module

Voltage (Operating): 12 VDC

Ordering information

D8125 Addressable Expansion Module

Provides expansion up to 238 points.

Order number D8125

Represented by:

Europe, Middle East, Africa: North America: Asia-Pacific:

Bosch Security Systems B.V.

P.O. Box 80002

5600 JB Eindhoven, The Netherlands

Phone: [phone]

[e-mail]

emea.boschsecurity.com

Bosch Security Systems, Inc.

130 Perinton Parkway

Fairport, New York, 14450, USA

Phone: [phone]

Fax: [phone]

[e-mail]

www.boschsecurity.us

Robert Bosch (SEA) Pte Ltd, Security Systems

11 Bishan Street 21

Singapore 573943

Phone: [phone]

Fax: [phone]

[e-mail]

www.boschsecurity.asia