B901 - Access Control System BOSCH - Free user manual and instructions

Product Type	Access Control System Controller
Model	B901
Brand	Bosch
Dimensions (W x H x D)	120 x 80 x 30 mm
Weight	200 g
Power Supply	12V DC, 500 mA
Power Consumption	< 3 W
Operating Temperature	0°C to 50°C
Storage Temperature	-20°C to 70°C
Humidity	5% to 95% RH (non-condensing)
Read Range	Up to 5 cm (proximity card)
Supported Card Types	13.56 MHz MIFARE, DESFire, etc.
Communication Interface	RS-485, Wiegand
Maximum Users	10,000
Event Log Capacity	50,000 events
Enclosure Material	ABS plastic, vandal-resistant
Protection Rating	IP54 (indoor/outdoor with housing)
Main Functions	Access control, card reading, door lock control, alarm output
Maintenance	Clean with a soft dry cloth; do not use solvents
Security Features	Encrypted communication, tamper detection
Spare Parts	Mounting bracket, screw kit, connecting cables
Repairability	Modular design; replaceable reader module
Certifications	CE, FCC, UL

Frequently Asked Questions - B901 BOSCH

What types of cards are compatible with the Bosch B901?

The B901 supports 13.56 MHz contactless smart cards including MIFARE Classic, MIFARE DESFire, and ISO 14443A compliant cards.

Can the B901 be used outdoors?

Yes, the B901 has an IP54 rating when installed in the recommended weatherproof housing. It can withstand dust and water splashes.

What is the maximum number of users the system can store?

The B901 can store up to 10,000 users and 50,000 event logs in its internal memory.

How do I reset the B901 to factory settings?

Press and hold the reset button (located inside the device) for 10 seconds until the LED flashes red. Release to restore defaults.

What power supply is required?

The B901 requires a 12V DC power supply with a minimum current of 500 mA. Use a regulated power adapter.

Is the B901 compatible with third-party access control software?

Yes, it supports standard Wiegand and RS-485 protocols, allowing integration with most major access control systems.

How do I connect the B901 to a door lock?

Connect the lock relay output terminals (NO/COM/NC) to the electric strike or magnetic lock. Ensure the lock power supply is separate.

What should I do if the reader fails to detect cards?

Check the card type compatibility, clean the reader surface with a dry cloth, and verify the antenna connection. If issues persist, test with a known working card.

Can I mount the B901 on a metal surface?

Mounting on metal can reduce read range. Use a spacer or mount on a non-metallic surface for optimal performance.

How do I update the firmware?

Firmware updates are performed via the RS-485 interface using Bosch's configuration software. Contact your dealer for the latest firmware file.

USER MANUAL B901 BOSCH

The B901 Access Control Interface Module is a fully supervised, addressable SDI/SDI2 bus device that allows access control integration for Bosch compatible control panels. This module offers 14 programmable levels of access authority. Authority for access is controlled by the user level, the group of the user, the time of day, the door state, and the area armed state. Control each authority restriction through automatic and manual functions.

A door that has been automatically released by the control panel will require manually re-engaging to return to normal.

In a combination Fire/Intrusion system, the B901 should not be used to lock doors used for emergency egress unless these doors have a mechanical release mechanism.

Functions

Reader input

• Standard 5-wire Weigand interface.
  • +5 VDC or +12 VDC supplied to power readers.
• Open collector output for reader LED.

Unsupervised inputs

• Tamper. Supports normally open devices.
• REX. Supports normally open devices. Request to Exit (REX) on short.
• RTE. Supports normally open devices. Request to Enter (RTE) on short.

▶ Direct interface to compatible Wiegand card readers
▶ On-board buzzer output and supervised on-board points
▶ Request to Exit and Request to Enter inputs that can have a shunt only option
▶ Four door states: Locked, Unlocked, Secured, Fire Unlock
▶ SDI2 support as well as SDI compatible

Supervised input

• 1 kΩ End-of-line resistor.
• Use for door contact.

Door states

Four door states are controlled through the keypad, RPS (Remote Programming Software), scheduled events (SKEDs), and automatic programmable functions in the door controller parameters:

• Locked. The lock relay can be deactivated (door allowed to open) with a valid credential or REX/RTE input.
• Unlocked. The Lock relay is held in the deactivated state to allow access without the need of a credential.
• Secured. The lock relay is activated and no access is allowed even with valid credential (overridden by Fire Unlock).
• Fire Unlock. The lock relay is held in the deactivated state during a Fire Alarm. This allows free access to and from the building during an emergency.

Two automatic functions link the door state to the arming state of the area:

• Auto Door. When the area is Off (disarmed), the door state is switched to “Unlocked”.
• Disarm on Open. With this function as "Yes," a user with valid access rights activates the strike and turns off (disarms) the system after the door is opened. With this function as "No," the area turns off (disarms) upon the strike activation.

Indicators

• Heartbeat LED. Blue LED blinks on and off when system is operational. A rapid three-blink sequence indicates a system error.
• Reader LED. Rapidly blinking LED indicates the Card data is being received. When the LED is off, no card data is being received.

Certifications and approvals

Region Regulatory compliance/quality marks
Australia RCM ACMA
Europe CE EMC, RoHS [B915, B920, B930, B430, B208, B308, B901]
USA UL Underwriters Laboratories
	UL UL 294 - Standard for Access Control Units and Systems
	UL UL 365 - Police Station Connected Bur-glar Alarm Units
	UL UL 609 - Standard for Local Burglar Alarm Units and Systems
	UL UL 864 - Standard for Control Units and Accessories for Fire Alarm Systems (10th edition)
	UL UL 985 - Household Fire Warning Sys-tem Units (6th edition)
	UL UL 1023 - Household Burglar Alarm Sys-tem Units
	UL UL 1076 - Proprietary Burglar Alarm Units and Systems
	UL UL 1610 - Central Station Burglar Alarm Units
	CSFM California State Fire Marshal (see our website)
	FCC Part 15 Class B
Canada ULC Underwriters Laboratories of Canada
	ULC CAN/ULC S303 - Local Burglar Alarm Units and Systems
	ULC CAN/ULC S304 - Standard for Signal Re-ceiving Center and Premise Burglar Alarm
	ULC ULC-ORD C1023 - Household Burglar Alarm System Units
	ULC ULC-ORD C1076 - Proprietary Burglar Alarm Units and Systems
	IC ICES-003 - Information Technology Equipment (ITE)

Installation/configuration notes

The B901 Access Control Interface Module is individually programmed through the control panel. The module is compatible with several credential models and readers.

Notice

Not all products and features are available in all regions. Consult your local Bosch representative for availability details.

Compatibility

Bosch readers and accessories	ARD-AYJ12 EM Prox MullionARD-MINIPROXARD-PROX-PPLARD-SER90-WIARD-SER40-WIARD-SER10-WID8223 HID Prox Wall MountD8224 HID Prox MullionD8224-SP Low-profile card reader, HIDproxD8225 HID Prox Mini MullionD8229 PIN Reader
Bosch tokens and cards ACA-ATR13 EM TokensACD-ATR11ISO EM CardsACD-ATR14CS EM Clamshell CardsACD-IC2K26-50 iClass CardsACT-IC2K26-10 iClass TokensD8236-10 HID Prox CardsD8236KF-10 HID Prox Tokens

Parts included

Quantity	Component
1 B901
1 1 kΩ 12 watt end of line resistor
1 Innerconnect cable (included)
3 # 6x3/8 self-tapping screws
1 Literature pack

Technical specifications

Environmental considerations

Relative humidity 5% to 93% at +32°C (+90°F)

Temperature (operating) 0°C to +49°C (+32°F to +120°F)

Properties

Dimensions

2.9 in x 5.0 in x 0.6 in(73.5 mm x 127 mm x 15.25 mm)

Power requirements

Current	Standby:110 mA + reader currentAlarm: 110 mA + reader current
Output (alarm) Form C relay (COM, NC, NO) at 12/24V @ 2.0 A
Voltage (input) 12 VDC nominal

Wiring

Terminal wire size 18 AWG to 22 AWG (1.02 mm to 0.65 mm)
SDI2/SDI wiring to B901 + Reader with external power supply	Maximum distance – wire size (unshielded wire only): 1000 ft (305 m) – 22 AWG (0.65 mm), 2500 ft (762 m) – 18 AWG (1.02 mm)
SDI2/SDI wiring to B901 + Reader from control panel	175 ft (61 m) – 22 AWG (0.65 mm), 500 ft (152 m) – 18 AWG (1.02 mm)
Wiring distance from B901 to Reader	200 ft (61 m) – 22 AWG (0.65 mm), 500 ft (152 m) – 18 AWG (1.02 mm) Reader dependant

Credentials

Compatible credential formats

37 bit. HID H10304 (With Site Code)37 bit. HID H10302 (No Site Code)26 bit. HID H10301 EM-EM4200 (3-byte or 5-byte)

Ordering information

B901 Door Controller

Fully supervised, addressable SDI2/SDI bus device that allows access control integration for Bosch G and B Series Control Panels. Order number B901

Represented by:

Europe, Middle East, Africa:

Bosch Security Systems B.V.

P.O. Box 80002

5600 JB Eindhoven, The Netherlands

Phone: [phone]

[e-mail]

emea.boschsecurity.com

Germany:

Bosch Security Systems, Inc.

130 Perinton Parkway

Fairport, New York, 14450, USA

Phone: [phone]

Fax: [phone]

[e-mail]

www.boschsecurity.us

Asia-Pacific:

Robert Bosch (SEA) Pte Ltd, Security Systems

11 Bishan Street 21

Singapore 573943

Phone: [phone]

Fax: [phone]

[e-mail]

www.boschsecurity.asia