Mercury Security © 2015
EP4502
DOC 10107-0039
REV 1.02
Page 1
www.mercury-security.com
2355 MIRA MAR AVE. LONG BEACH, CA 90815-1755, (562)986-9105 FAX (562) 986-9205
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
EP4502 Intelligent Controller
with Two Reader Interface
Installation and Specifications:
1. General
The EP4502 intelligent controller provides decision making, event reporting, and database storage for the
Mercury hardware platform. Two reader interfaces provide control for two doors.
The EP4502 communicates with the host via on-board 10Base T/100Base-TX Ethernet port.
Two physical barriers can be controlled with the EP4502. Each reader port can accommodate a read-
head that utilizes Wiegand, magnetic stripe, or 2-wire RS-485 electrical signaling standards and also
provides tri-stated LED control, and buzzer control (one wire LED mode only). Four Form-C relay outputs
may be used for strike control or alarm signaling. The relay contacts are rated at 5 A @ 30 Vdc, dry
contact configuration. Eight inputs are provided for monitoring the door contacts, exit push buttons and
alarm contacts. The EP4502 requires 12 to 24 Vdc for power.
2. EP4502 Hardware:
2.00 [50.80]
3.00 [76.20]
2.00 [50.80]
8.00 [203.20]
5.50 [139.70]
6.00 [152.40]
Ø0.156 [Ø3.962]
8 PLACES
R
E
S
E
T
2
3
4
1
S1
ON
J1
J11
3.3V
J9
J5
8V
5V
S2
IN
1
IN
2
IN
3
IN
4
IN
5
IN
6
IN
7
IN
8
K 1
K 2
K 3
K 4
1
2
3
4
5
6
7
BAT
BT1
3V
BR/CR2330
BA
S
E
2-D
OO
R
USB HOST
ETHERNET
J12
P
AS
S
J7
1
2
V
DA
T
D0
CL
K
D1
BZR
LE
D
VO
TB
8
G
N
D
DA
T
D0
CL
K
D1
BZR
LE
D
VO
TB
9
G
N
D
TB
1
G
N
D
F
LT
G
N
D
V
IN
G
N
D
TM
P
NO
C
NC
NO
C
NC
O
U
T1
O
U
T2
C
NC
NO
C
NC
O
U
T3
O
U
T4
NO
READER 1
READER 2
TB1
0
TB1
1
+
TR+
TR
-
G
N
D
TB
2
TR+
TR
-
G
N
D
TB
3
m
ic
ro
S
D
J1
0
IN3
IN4
TB
4
IN1
IN2
TB
5
TB
6
IN5
IN6
TB
7
IN7
IN8
RS4
85
-1
RS4
85
-2
J2
BATTERY: BR/CR2330
REPLACE ANNUALLY
INPUT
STATUS
LEDs
OUTPUT
STATUS
LEDs
DIP SWITCHES
RESET SWITCH
STATUS
LEDs
RESET
PROCESSOR
RESET SWITCH
CHASSIS
GROUND
PROCESSOR
STATUS LED
0.25 [6.35]
S1
0.50 [12.70]
