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PRA-IM2A2

Audio interface module 2x2, PoE powered, Network/Power connection redundancy, 2 micrpohone/line level inputs, 2 balanced line level outputs, 2 supervised GPIs, 2 general purpose relay outputs, configurable analog/digital modes, allows Dante input integration

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BOSCH

Global leader in Public Address, Voice Evacuation and Conference Systems.

IP-connected and fully-featured

PRAESENSA Public Address and Voice Alarm System

PRAESENSA system components

PRA-IM2A2 PRAESENSA Audio Interface Module, 2x2

PoE-powered DIN-rail module with two balanced mic/line inputs and two line outputs to bring microphones, music sources and Dante audio into PRAESENSA and feed external amplifiers.

2 x Mic / Line Inputs
2 x Line Outputs
Analog or Dante

PRA-IM2A2 · Product drawings

See the PRA-IM2A2 from every side

Every connection on the front, and how the module brings outside audio into PRAESENSA and back out.

Front panel · 01 / 02 PRA-IM2A2 front panel

Front panel2 audio inputs, 2 audio outputs, 2 control inputs, 2 relay outputs, network ports and status LEDs.

01 / 02

PRA-IM2A2 · Key features

Bring any audio into PRAESENSA

Explore the key capabilities of the Bosch PRAESENSA PRA-IM2A2 audio interface module. Click a feature to see it in detail.

Features

PRAESENSA · Application areas

Ideal for mid-to-large sites

Click a site to see how PRAESENSA zones it, with an example bill of quantities. Existing systems on site can be integrated with new PRAESENSA buildings.

LIBRARYQuiet

LECTURE HALLS● Announcement

LABS● Paging · 70%

CAFETERIA● Music · 50%

CAMPUS GROUNDS● Music · 35%

ROOF · TERRACE● Music · 40%

FLOOR 3 · GUEST ROOMSQuiet

FLOOR 2 · CONFERENCE● Announcement

FLOOR 1 · RESTAURANT● Music · 55%

GROUND · LOBBY● Music · 60%

BUILDING A · EXISTING SYSTEMBUILDING B · NEW PRAESENSA

FLOOR 2 · SHOPS● Music · 50%

FLOOR 1 · FOOD COURT● Music · 65%

GROUND · ATRIUM● Promotion · 70%

PARKING● Parking notice

FLOOR 3 · CINEMAQuiet

FLOOR 2 · FASHION● Music · 45%

FLOOR 1 · KIDS ZONE● Music · 40%

GROUND · ENTRANCE● Parking notice

OMNEO / IPLIVE CALL SYNCPRA-SCL

TERMINAL HALL● Boarding call

GATES A–D● Paging · 75%

CHECK-IN● Music · 35%

BAGGAGE CLAIM● Paging · 60%

AIRSIDEEvacuation ready

ICUQuiet

OPERATING THEATRESQuiet

WARDS● Staff paging · 40%

OPD · WAITING● Music · 30%

EMERGENCY● Code call

CONTROL ROOMSupervised

PROCESS AREA● Alarm tone

LOADING BAY● Paging · 90%

WORKSHOP● Paging · 80%

ADMIN BLOCK● Music · 30%

Customer stories

PRAESENSA protects airports, stadiums, hotels and campuses around the world.

Ask for references →

01 / 07 · Universities

Universities

“When choosing a university, students and their families value a safe and secure teaching and learning environment.”

Loud in labs, quiet in libraries
Phased evacuation to local rules
Staff adjust music across campus

Example site: campus with 5 buildings

48zones

4call stations

296speakers

Example BOQQty

PRA-SCLSystem controller1

PRA-MPS3Power supply + battery charger3

PRA-AMPLAmplifier, 600 W3

PRA-CSLDCall station4

Ceiling speakersHalls, classrooms, library220

Wall / cabinet speakersCorridors, cafeteria60

Horn speakersCampus grounds16

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

02 / 07 · Hotels

Hotels

“Hotel guests who feel right at home are more likely to enjoy repeat visits and make recommendations.”

Music changes by time and season
Calm audio near guest rooms
Multilingual message library

Example site: 12-floor city hotel

26zones

2call stations

196speakers

Example BOQQty

PRA-SCLSystem controller1

PRA-MPS3Power supply + battery charger2

PRA-AMPLAmplifier, 600 W2

PRA-CSLDCall station2

Ceiling speakersLobby, corridors, restaurant160

Wall speakersConference, spa24

Outdoor speakersTerrace, pool12

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

03 / 07 · Shopping malls

Two buildings, one system

“Happy, informed shoppers stay longer and buy more.”

Connects with the PA system already on site
One announcement across both buildings
Music, promotions and notices per zone

Example site: existing mall + new extension

40zones

3call stations

344speakers

Example BOQQty

PRA-SCLSystem controller (new building)1

IntegrationLink to existing PA system1

PRA-MPS3Power supply + battery charger4

PRA-AMPLAmplifier, 600 W4

PRA-CSLDCall station3

Ceiling speakersShops, food court, atrium320

Horn speakersParking24

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

04 / 07 · Airports

Airports

Clear, timed announcements across every terminal and gate.

Gate and boarding calls by zone
Phased evacuation of concourses
Multilingual pre-recorded messages

Example site: terminal with 24 gates

96zones

10call stations

600speakers

Example BOQQty

PRA-SCLSystem controller (redundant pair)2

PRA-MPS3Power supply + battery charger8

PRA-AMPLAmplifier, 600 W8

PRA-CSLDCall station (gate desks)10

Ceiling speakersHalls, gates, baggage520

Projector / horn speakersAirside, high ceilings80

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

05 / 07 · Hospitals

Hospitals

Staff calls reach the right ward without disturbing patients.

Code calls to selected areas
Quiet ICU and operating theatres
EN 54-16 voice evacuation

Example site: 8-floor general hospital

60zones

6call stations

400speakers

Example BOQQty

PRA-SCLSystem controller (redundant pair)2

PRA-MPS3Power supply + battery charger4

PRA-AMPLAmplifier, 600 W4

PRA-CSLDCall station (nurse stations)6

Ceiling speakersWards, OPD, corridors360

Wall speakersEmergency, stairwells40

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

06 / 07 · Oil & gas refineries

Oil & gas refineries

Intelligible alarms and paging over high-noise process areas.

Alarm tones and paging per area
Supervised lines and redundancy
Control room keeps full status

Example site: process plant with 18 zones

18zones

3call stations

130speakers

Example BOQQty

PRA-SCLSystem controller (redundant pair)2

PRA-MPS3Power supply + battery charger3

PRA-AMPLAmplifier, 600 W3

PRA-CSLDCall station3

Horn speakersProcess area, loading bay110

Wall speakersControl room, admin20

Indicative quantities for an example site. Your system is sized by our engineers. Request a BOQ →

07 / 07 · References

References

Decades of Bosch public address design experience, with PRAESENSA running in sites worldwide.

Airports, metros and stadiums
Hotels, malls and campuses
Ask esco.pk for local references

Ask for references →

PRAIM2A2_Data_sheet_enUS_125717942411 (5).pdf

Download

Key specs

2 balanced mic/line inputs, 48 V phantom
2 balanced line outputs, 0 / +12 dBu
2 supervised control inputs, 2 SPDT relays
Digital mode: 2 Dante ↔ OMNEO channels
7-band EQ and compressor per channel
PoE powered (802.3af), dual ports, RSTP
EN 54-16 and ISO 7240-16 certified
DIN rail, 131 x 55 x 114 mm, 0.46 kg

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Specifications: Bosch PRAESENSA PRA-IM2A2

General

Specification	Value
Model	PRA-IM2A2
Order number	F.01U.389.019
Product type	Audio interface module, 2 × 2
System	Bosch PRAESENSA
Modes	Analog or digital (Dante), set in software

Audio Inputs (analog mode)

Specification	Value
Number of inputs	2, electronically balanced (single-ended compatible)
Type	Mic or line, switchable
Phantom power	+48 V / 10 mA, switchable per input
Input level	-36 to +18 dBu
Frequency response	20 Hz – 20 kHz (±0.5 dB at 0 dB gain)
Signal-to-noise ratio	114 dB (0 dB gain) / 91 dB (54 dB gain), A-weighted
Input impedance	≥ 3,300 Ω balanced / ≥ 2,500 Ω unbalanced
Max distortion	< 0.01% @ -3 dBFS / 1 kHz

Audio Outputs (analog mode)

Specification	Value
Number of outputs	2, electronically balanced line level (single-ended compatible)
Max output level	0 dBu or +12 dBu, adjustable
Frequency response	20 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio	111 dB (+12 dBu) / 103 dB (0 dBu), A-weighted
Output impedance	≤ 150 Ω
Max distortion	< 0.01% @ -3 dBFS / 1 kHz

Digital Mode

Specification	Value
Virtual channels	2, each Dante → OMNEO (input) or OMNEO → Dante (output)
Encryption	OMNEO channels encrypted

Audio Processing

Specification	Value
Sample rate	48 kHz
Crosstalk	< -80 dB at 1 kHz
Master EQ	7-band per channel
Level control	0 to -60 dB, mute, 1 dB steps
Dynamics	Compressor

Control Inputs

Specification	Value
Number of inputs	2
Principle	Contact closure, supervised (resistance measurement)
Contact closed / open	8 – 12 kΩ / 18 – 22 kΩ
Cable fault detection	< 2.5 kΩ / > 50 kΩ
Minimum hold time	100 ms
Max voltage to ground	24 V

Control Outputs

Specification	Value
Number of outputs	2
Principle	Relay, SPDT, voltage-free
Max contact voltage / current	24 V / 1 A
Max voltage to ground	500 V

Power

Specification	Value
PoE input	IEEE 802.3af, Class 3
Nominal voltage	48 V DC (37 – 57 V DC)
Power consumption	5.7 W (evacuation) / 7.0 W max

Network

Specification	Value
Ports	2 × PoE (PD), 100BASE-TX / 1000BASE-T
Protocols	TCP/IP, OMNEO (OCA/AES70), Dante
Redundancy	RSTP, loop-through cabling
Security	TLS

Supervision

Specification	Value
Control input connections	Open / short
Audio connections (optional)	Pilot tone, 18 – 21 kHz, -10 to -30 dBFS
Controller continuity	Watchdog
Network interface	Link presence
PoE 1–2	Voltage

Reliability & Environmental

Specification	Value
MTBF	1,700,000 h (Telcordia SR-332)
Operating temperature	See note
Storage temperature	-30°C to +70°C (-22°F to 158°F)
Humidity (non-condensing)	5% – 95%
Air pressure	560 – 1,070 hPa
Altitude	-500 m to 5,000 m
Vibration (operating)	< 0.35 mm, < 2 G
Bump (transport)	< 10 G

Mechanical

Specification	Value
Dimensions (H × W × D)	131 × 55 × 114 mm
Weight	0.46 kg
IP rating	IP30
Material	Aluminum
Color	RAL 9017 Traffic Black
Mounting	DIN rail (bracket pre-assembled)
Terminals	Pluggable spring-cage terminal blocks

Certifications

Category	Standard
Emergency (Europe)	EN 54-16
International	ISO 7240-16
Safety	IEC/CSA/UL 62368-1
Immunity	EN 55035, EN 50130-4
Emissions	EN 55032, EN 61000-6-3, ICES-003, FCC-47 Part 15B Class A
Environment	EN/IEC 63000

Parts Included

Quantity	Component
1	Audio interface module, 2×2
1	DIN rail mounting bracket (pre-assembled)
1	Set of connectors
4	Supervision resistors, 10 kΩ
1	Safety and security information booklet
1	Quick installation guide

Questions & answers

Know before you buy

Quick answers about the PRA-IM2A2, and how it compares.

Where does the PRA-IM2A2 fit?

It connects outside audio to a Bosch PRAESENSA system: microphones, music players and mixers in, and external amplifiers or recorders out. It’s DIN-rail mounted near that equipment and linked to the [PRA-SCL] controller over the network.

What can I connect to it?

Connection	Qty	Type	Typical use
Audio inputs	2	Balanced mic/line, 48 V phantom	Microphone, music player, mixing desk
Audio outputs	2	Balanced line, 0 / +12 dBu	External amplifier, recorder, other systems
Control inputs	2	Supervised contact closure	Start a call or music source
Control outputs	2	Voltage-free SPDT relay, 24 V / 1 A	Indicator lights, external devices

Inputs and outputs are routed and configured in the PRAESENSA software.

What is digital mode?

In digital mode, the two channels convert Dante ↔ OMNEO: a Dante stream from a music server or mixing console becomes an encrypted PRAESENSA channel, or the reverse. The analog connectors aren’t used in this mode.

Can I use it to feed a non-Bosch amplifier?

Yes. The outputs can be assigned to zones and feed any amplifier with an analog line input. That’s useful for extending a PRAESENSA system into an existing installation.

How is it powered and connected?

One shielded network cable carries data and PoE power (802.3af Class 3, up to 7 W). Add a second cable for redundancy, or loop through to the next device. Power it from a PoE port such as the [PRA-ES8P2S] switch.

How does a PRAESENSA system fit together?

The [PRA-SCL] or [PRA-SCS] system controller is the brain: it routes all audio, plays messages and supervises every device. [Amplifiers], [multifunction power supplies] with battery backup and [call stations] all connect over one IP network using OMNEO, with loop-through cabling for redundancy. Up to 250 devices and 500+ zones per system, certified to EN 54-16 and ISO 7240-16.

Who supplies Bosch PRAESENSA in Pakistan, and what warranty do I get?

Electronic Security Company (ESCO) is the only authorized distributor of Bosch, Dynacord and Electro-Voice in Pakistan, so every PRAESENSA product we supply is genuine and comes with a 3-year warranty. Warranty is carry-in: bring the unit to an ESCO office and after inspection it is repaired or replaced as needed.

Amplifiers & Microphones

PRA-ANS

PRA-SFPSX

PRA-IM2A2

Brand - BOSCH

IP-connected and fully-featured

IP-connected and fully-featured

See the PRA-IM2A2 from every side

Bring any audio into PRAESENSA

Ideal for mid-to-large sites

Universities

Hotels

Two buildings, one system

Airports

Hospitals

Oil & gas refineries

References

See the PRA-IM2A2 from every side

Bring any audio into PRAESENSA

Ideal for mid-to-large sites

Universities

Hotels

Two buildings, one system

Airports

Hospitals

Oil & gas refineries

References

Key specs

Specifications: Bosch PRAESENSA PRA-IM2A2

General

Audio Inputs (analog mode)

Audio Outputs (analog mode)

Digital Mode

Audio Processing

Control Inputs

Control Outputs

Power

Network

Supervision

Reliability & Environmental

Mechanical

Certifications

Parts Included

Know before you buy