About This Product – SureCall Guardian4™ Bi-Directional Amplifier
Public Safety BDA for First Responders
SureCall Guardian4™ Bi-Directional Amplifier for Public Safety Band signal booster amplifies FirstNet signals for crucial communications, delivering consistent signal for First Responders and other public safety officials relying on two-way radio communication inside large buildings.
The Guardian4 is a bi-directional amplifier with a maximum gain of 80 dB on the Public Safety frequency bands, supporting 700 MHz (FirstNet Ready) and 800 MHz.
In the majority of cases, newly constructed buildings with considerable size, or existing buildings that increase capacity by expanding the building footprint are required to have signal strength of -95 dBm or better in designated critical areas – elevators, stairwells, etc. – in order to receive a certificate of occupancy. Guardian4 meets the code for NFPA 1221 and IFC 510 and features a NEMA-4 rated amplifier housing, which eliminates the need for an additional NEMA enclosure.
Additionally, the Guardian4 comes equipped with dry contact 7-pin alarming capability, UPS and Ethernet port enabled remote monitoring. The BDA features sturdy metal construction and is covered by an industry leading 3-year warranty.
MECHANICAL SPECIFICATIONS
RF Connectors: N Female
Dimensions: 25 x 19 x 9 in
Weight: 54 lbs
GUARDIAN4 BDA INTERFACE
Interface | Type | Description
A1 Grounding lug Grounding lug
A2 OUTSIDE N Female for OUTSIDE cable and antenna
A3 ALARM I/O To Fire Department Control Box
A4 ETHERNET Cat5e Standard Ethernet Cable Device
A5 POWER 110VAC Connect to 110VAC or 110V of UPS output
A6 INSIDE N Female for INSIDE cable and antenna
A7 USB Used to initialize the network connection devices
A8 Alarm LEDs Indicate an alarm condition
A9 DC12-20V Connect DC, voltage should be between 12-24V
INCLUDED COMPONENTS:
• Guardian4 bi-directional amplifier with NEMA-4 rated housing and mounting kit
• Alarm cable and connector
• Ethernet connector
• AC power cable
• DC power cable and connector
Features & Benefits
» Provides improved coverage for Public Safety 700 MHz (FirstNet) and 800 MHz
» 80 dB gain for Public Safety Bands » Features built-in SureCall Sentry™ remote monitoring with ethernet port
» Integrated 7-pin alarm and UPS port for external battery backup
» NEMA-4 rated amplifier housing. No additional NEMA enclosure(s) needed
» Meets the code for NFPA 1221 and IFC 510
» Dry contact 7-pin alarm, UPS and Ethernet port for remote monitoring
» Energy-saving operation allows bands to remain dormant when not in use
» Automatic gain control (AGC)
» A/C 110V or D/C 12-20V power option
» Independently adjustable frequency attenuation for uplink and downlink (Reduce gain in -1 dBm increments)
ADDITIONAL REQUIRED COMPONENTS:
Note: Some component options are listed in table below. Not all accessories are listed.
• One External antenna a (omnidirectional or directional Yagi)
• Multiple Inside antennas b (omnidirectional domes and/or directional panels)
• Cable splitter for inside antennas c
• Sufficient SC-400 ultra-low loss interior/exterior cable, 50 ohm d
• Lightning protector
• Grounded surge suppressor for DC power supply
Browse our selection of SureCall cell signal amplifier parts and accessories including antennas, cables, connectors, adapters and installation tools. Replace power adapters, install custom wall mountings, and protect your signal boosting equipment from lightning surges and more.

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