UL Class I Division 1 Telephones
World’s First UL Division 1 VoIP Telepone
VoIP / SMART / Analog
Line Powered
Noise Canceling Microphone
Volume Adjust
Type 4X Weather Rating
Ring Relay
GAI-Tronics 352, the world’s first UL Class I Division
1 VoIP telephone, is also available in standard
analog or SMART configurations. All models are UL
approved to Class I Division 1 Groups B, C, & D,
Class II Groups F & G and Class III, Type 4X, and ABS
Type Approved.
A native VoIP telephone, the 352 VoIP models do
not need an IP convertor but connect directly to a
SIP based VoIP telephone system.
Configuration is via password protected intuitive
web pages within the telephone. These embedded
pages are accessed using a browser such as
Internet Explorer to view, monitor and change
settings without the need for proprietary software.
Power Over Ethernet (PoE) operation removes the
need for external power supply connection. With
only one voice and data infrastructure to install and
maintain, VoIP telephony saves time and money.
For users utilizing a conventional PABX technology,
GAI-Tronics Self Monitoring and Reporting
Technology (SMART) offers event and fault reporting over a standard analog line.
GAI-Tronics proven industrial telephone circuitry
housed for use in Division 1 hazardous environments.
Ring Relay
All variants of the VoIP telephone are complete
with a configurable relay output. Analog variants
are available with relay contact. Ring relay contacts
are 5A, 250 V ac / 30 V dc rated.
Volume Control
All versions of the new Division 1 telephone have a
four (4) step push button control volume control.
UL Class I Division 1 Telephones
VoIP / SMART / Analog
12.25” (311.2 mm)
UL & cUL approved;
Class I Division 1 Groups B, C, & D
Class II Groups F & G
Class III
ABS Type Approval
Weight: 28lbs (12.7kg)
Environmental: Type 4X T6 - Gas
T4A - Dust
Operating Temperature Range
Analog: - 40°C (-40°F) to + 60°C (140°F)
SMART: - 20°C (-4°F) to + 60°C (140°F)
VoIP: - 20°C (-4°F) to + 60°C (140°F)
10.25” (260.4 mm)
9.36” (237.6 mm)
Enclosure: Copper Free Cast Aluminum
Handset: Carbon loaded ABS body, 6’ PVC
coiled cord
352-701 VoIP Handset
Power: Power-over Ethernet, 802.3af
compliant (via RJ45), or External power
supply: 36-56 V dc, 200 mA; a separate,
isolated supply must be provided for each
Network: 10/100 BaseT Ethernet RJ45,
Cat5 or Cat5e UTP Static IP provisioning or
DHCP STUN client (NAT traversal)
Call Control Signaling: SIP (RFC3261
compliant) loose routing
352-101 SMART Handset
352-102 SMART with ring relay
352-001 Analog Handset
352-002 Analog with ring relay
GAI-Tronics TMA compatibility
profile type . . . . . . GTC SMART
Telecoms Compliance to Standards:
FCC CFR 47 Part 15
Handset Minimum loop current
(48 V dc only). . . . . 20 mA
Operation. . . . . . . . Loop start
Telecoms Compliance to Standards:
FCC CFR 47 Part 15
Quality of Service: Priority of IP Packets
according to TOS and DiffServe VLAN
Priority according to IEEE8021.p/802q
Redundancy: Supports up to 4 SIP proxys
Configuration: Embedded web server
Monitoring and Reporting: Real-time over
TCP/IP Syslog application or email
Telecoms Compliance to Standards:
FCC CFR 47 Part 15
Manuals Available at
Toll Free: 1 (800) 492-1212 Tel: (610) 777-1374 Fax: (610) 796-5954
Tel: +44 (0)1283 500500 Fax: +44 (0)1283 500400
Tel: +39 02 48601460 Fax: +39 02 93663110
Tel: +60-3-8945-4035 / 8945-7348 Fax: +60-3-8945-4675
Tel: 011-61-28-851-5000 Fax: 011-61-29-899-2490
Quality Management System Certified by DNV - ISO 9001:2008. The policy of GAI-Tronics is one of continuous improvement; therefore the company reserves the right to change specifications without notice.
Pub. 111004
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