• These devices are intended for connection to single
line telephone or key systems only.
• When installed in accordance with these instructions,
the devices can be readily disconnected without
affecting equipment remaining on the telephone
network.
• Registered with the Federal Communications
Commission in compliance with Part 68 of FCC Rules
and Regulations.
• UL Listed Type NM (non-monitored) signal device
Description
The Edwards mechanical telephone relays are designed
for use with horns, bells, strobes, or similar devices to
create remote telephone ringing capability in areas where
ambient noise levels are high or personnel are unable to
be near telephones at all times. The relays can operate
up to five vibrating-type horns, buzzers, and bells and
do not affect the efficiency of the phone. The panel
mount, pressed steel and Hazardous Location units are
UL Listed for indoor use and the weatherproof units are
UL Listed for outdoor use.
The panel mount unit has a steel cover on a 4 1/4" diam-
eter bakelite base. The pressed steel unit has a hinged
steel cover and 1/2" and 3/4" knockouts. The weather-
proof unit has a cast back box with a threaded joint for a
cast aluminum enclosure. The Hazardous Location unit
has a cast box with a dust tight, flame proof joint, and is
tapped for 1/2" conduit. The Hazardous Location unit is
UL Listed for Class I, Group D and Class II, Groups F and G.
Important Telephone Information
(Applies only to units with capacitor)
The following information may be required by the tele-
phone company: Telephone Number, FCC Registration
Number: 329USA-21458-RG-N, Ringer Equivalence Num-
ber (REN): 3.4B.
The REN allows the installer to determine the number of
devices that can be added to the telephone line and still
have all the devices ring when the number is called. In
most, but not all, areas, the sum of all RENs for all de-
vices connected to your line should not exceed five. To
be sure of the number of devices you can connect to your
telephone line, contact your local telephone company.
If these devices damage the telephone network, the tele-
phone company will notify the owner that it may tempo-
rarily disconnect service if they consider such action nec-
essary. If the owner considers the disconnection unwar-
ranted, they have the right to bring a complaint to the
FCC.
The telephone company may make changes in its commu-
nication facilities, equipment, operations, or procedures
when such action is required. If these changes render the
devices incompatible with the telephone company facili-
ties, the telephone company will provide enough written
notice so that necessary changes can be made in order to
maintain uninterrupted service.
Specifications
DC Coil Standard Telecode Relays
Resistance With Capacitor Without Capacitor
(ohms) V AC V AC V DC
1000 100-115 105-115 18
1600 140-170 170-200 24
2500 200-230 200-230 30
3000 220-277 220-277 40
Cat No. Description
PANEL MOUNT UNITS
B-8313-P-1000* Without Capacitor, Normally Open
B-8325 One Mfd. Capacitor with Bracket
PRESSED STEEL UNITS
B-8315-P-1000* Without Capacitor, Normally Open
B-8316-P-1000* With Capacitor, Normally Open
WEATHERPROOF UNITS
B-8322-P-1000* Without Capacitor, Normally Open
B-8323-P-1000* With Capacitor, Normally Open
HAZARDOUS LOCATION UNITS
B-8319-P-1000* Without Capacitor, Normally Open
B-8320-P-1000* With Capacitor, Normally Open
NOTE: Units with capacitors are FCC certified.
*1600, 2500, and 3000 ohm coils available. To order,
change 1000 in Cat No. to appropriate resistance.
Two shading coils prevent armature chatter. Relay coil
windings are rated in ohms. Wire size and number of
turns vary with resistance requirements.
Capacitance of units is 1 uF at 400V, except panel mount
units which require remote capacitors. AC relays and re-
lays used on common battery circuits require capacitors.
DC relays do not require capacitors unless energized by a
common battery.
Contacts are made from tungsten and are rated at .8 amps
at 110V DC.
Installation Instructions for Catalog Numbers B-8313,
B-8315, B-8316, B-8319, B-8320, B-8322, B-8323 and B-8325
Mechanical Telecode Relays
P-047550-1616 ISSUE 3 © 2001
CHESHIRE, CT 203-699-3300 FAX 203-699-3365 (CUST. SERV.) 203-699-3078 (TECH SERV.)
(1 pages)
(6 pages)
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