EH2304-PR are with 4 RJ-45 ports for your industrial applications. They are designed to work in the industrial environment, such as in hazardous locations and compliant with CE, FCC, UL, and RoHSII standards. EH2304-PR protect themselves from receiving over broadcast packets. During normal use, broadcast packets will be forwarded to all ports, except the source port. However, it will discard broadcast or multicast packets if the number of those packets exceeds a threshold in a preset period of time. When the preset period expires (about 800ms), it will then resume receiving broadcast or multicast packets until the threshold is reached again. EH2304-PR provides two redundant power inputs that can be connected simultaneously to wide-range DC power sources. If one of the power inputs failure, the another live source acts as a backup to provide the EH2304-PR power input automatically.  

Technology
Standards	IEEE802.3, 802.3u, 802.3x IEEE802.1Q/p
Processing Type	Store and Forward
Flow Control	IEEE802.3x flow control, backpressure flow control

Interface
RJ-45 Ports	10/100BaseT(X) auto negotiation speed Full/Half-duplex mode, and auto MDI/MDI-X connection
LED Indicators	Power, 10/100M

Power
Input	9-48 VDC, Dual inputs
Consumption	EH2308-PR 6.4 Watts Max. / EH2304-PR 4.0 Watts Max.
Connector	Removable 5-pin Terminal Block for power input
Reverse Polarity Protection	Present

Environmental
Operating	-10°C ~ 70°C ( 14ºF ~ 158ºF )
Storage	-40ºC ~ 85ºC ( -40ºF ~ 185ºF )
Ambient Relative Humidity	5%~95% non-condensing

Physical Properties
Housing	IP30 protection; aluminum housing
Dimension (W x H x D)	22.5 x 110 x 78 mm
Weight	320g
Warranty	5 years

Certification
UL(Safety)	UL60950-1 2nd Ed. / CSA C22.2 No.60950-1-07 2nd Ed. / CB (IEC60950-1 / IEC62368-1)
FCC(EMI)	FCC 47 CFR Part15, Subpart B, Class A
CE(EMI)	European Standard EN 55032:2012+AC:2013 EN61000-6-4:2007+A1:2011
CE(EMS)	EN 55024: 2010 EN 61000-6-2:2005+AC:2005 IEC 61000-4-2: 2008 IEC 61000-4-3: 2010 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2008 IEC 61000-4-8: 2009
Shock	IEC 60068-2-27
Drop	ISTA Test Procedure 2A
Vibration	IEC 60068-2-64
RoHS	Lead(Pb) Free
MTBF	EH2304-PR 673300 hrs/ 76.86 years EH2308-PR 515600 hrs/ 58.86 years
Warranty	5 Years

MODEL NAME	PART NUMBER	Description
EH2304-PR	1P1EH2304PR001G	4-Port Unmanaged Fast Ethernet Switch

Optional Accessories
Power adapter	UN315-1212 (US-Y): Y-Type power adapter, 100~240VAC input, 1.25A @ 12VDC output, US plug, LV6
	UNE315-1212 (EU-Y): Y-Type power adapter, 100~240VAC input, 1.25A @ 12VDC output, EU plug, LV6

Datasheet

VERSION	NAME	TIME	SIZE	DOWNLOAD
v3.6	Datasheet EN	2026-01-20	264.99 KB
v3.3	Datasheet EN	2020-09-18	313.94 KB
v3.2	Datasheet EN	2020-09-07	314.29 KB
v3.1	Datasheet EN	2020-05-08	304.04 KB
v3	Datasheet EN	2017-06-30	2.34 MB
4 older versions

Hardware Installation Guide

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	EH200X - EHG200X - EH23XX - EHG23XX Hardware Installation Guide	2018-09-21	3.90 MB

Test reports

VERSION	NAME	TIME	SIZE	DOWNLOAD
	EH2304-PR Declarations of Conformity	2023-03-16	283.71 KB
v1.0	Safety Report (CB 62368-1)	2020-10-07	3.27 MB
v1.0	CE FCC Report	2020-09-08	3.00 MB
v1.0	IEC 61000 Report	2020-09-08	7.37 MB