Technical Parameters

Basic Parameters

SmartFlex SR300

Parameter	Condition	Value
Temperature Range	Operating Storage	-40 °C to +80 °C (-40 °F to +176 °F) -40 °C to +85 °C (-40 °F to +185 °F)
Cold Start		-40 °C (-40 °F)
Humidity	Operating Storage	0 to 95 % relative humidity, non-condensing 0 to 95 % relative humidity, non-condensing
Altitude	Operating	2000 m / 70 kPa
Degree of Protection		IP30
Supply Voltage		10 to 60 V DC (for PoE version, see PoE Parameters)
Battery for RTC		CR1225
Consumption	Idle Average Peak Sleep	2 W 3.3 W 4.5 W 10 mW
Dimensions		55 × 97 × 125 mm (DIN 35 mm, EN 60715)
Weight	Plastic Metal	approximately 211 g (depends on interface) approximately 327 g (depends on interface)
Antenna Connectors		R-SMA — 50 Ω (only for versions with Wi-Fi module)
User Interface	2× ETH USB I/O Micro SD	Ethernet (10/100 Mbps) USB 2.0 6-pin panel socket SDHC, SDXC

SmartFlex SR304

Parameter	Condition	Value
Temperature Range	Operating Storage	-40 °C to +75 °C (-40 °F to +167 °F) -40 °C to +85 °C (-40 °F to +185 °F)
Cold Start		-35 °C (-31 °F): Data transfers via mobile network are available immediately. -40 °C (-40 °F): Data transfers via mobile network are available approximately five minutes after router start. Everything else is functional immediately.
Humidity	Operating Storage	0 to 95 % relative humidity, non-condensing 0 to 95 % relative humidity, non-condensing
Altitude	Operating	2000 m / 70 kPa
Degree of Protection		IP30
Supply Voltage		10 to 60 V DC (for PoE version, see PoE Parameters)
Battery for RTC		CR1225
Consumption	Idle Average Peak Sleep	2.5 W 4 W 11 W 10 mW
Dimensions		55 × 97 × 125 mm (2.17" × 3.82" × 4.92") DIN 35 mm, EN 60715
Weight	Plastic Metal	approximately 170 g (0.37 lbs) (depends on interface) approximately 380 g (0.83 lbs) (depends on interface)
Antenna Connectors		3× SMA — 50 Ω 1× R-SMA — 50 Ω (only for versions with Wi-Fi)
User Interface	2× ETH USB I/O Micro SD	Ethernet (10/100 Mbps) USB 2.0 6-pin panel socket SDHC, SDXC

SmartFlex SR310

Parameter	Condition	Value
Temperature Range	Operating Storage	-40 °C to +70 °C (-40 °F to +158 °F) -40 °C to +85 °C (-40 °F to +185 °F)
Cold Start		-15 °C (+5 °F): Data transfers via mobile network are available immediately. -20 °C (-4 °F): Data transfers via mobile network are available approximately five minutes after router start. Everything else is functional immediately.
Humidity	Operating Storage	0 to 95 % relative humidity, non-condensing 0 to 95 % relative humidity, non-condensing
Altitude	Operating	2000 m / 70 kPa
Degree of Protection		IP30
Supply Voltage		10 to 60 V DC (for PoE version, see PoE Parameters)
Battery for RTC		CR1225
Consumption	Idle Average Peak Sleep	2.5 W 4 W 11 W 10 mW
Dimensions		55 × 97 × 125 mm (2.17" × 3.82" × 4.92") DIN 35 mm, EN 60715
Weight	Plastic Metal	approximately 170 g (0.37 lbs) (depends on interface) approximately 380 g (0.83 lbs) (depends on interface)
Antenna Connectors		2× SMA — 50 Ω 1× R-SMA — 50 Ω (only for versions with Wi-Fi)
User Interface	2× ETH USB I/O Micro SD	Ethernet (10/100 Mbps) USB 2.0 6-pin panel socket SDHC, SDXC

Standards and Regulations

The routers comply with the following standards and regulations:

SmartFlex SR300

Parameter	Description
Radio	ETSI EN 300 328, ETSI EN 301 893
EMC	ETSI EN 301 489-1, ETSI EN 301 489-17, EN 55032, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-6-2, EN 61000-6-3
Safety	EN IEC 62368-1 (UL E487720), EN IEC 62311, IEEE 802.3
Cybersecurity	EN 18031-1
National	CE, UKCA, FCC compliant

SmartFlex SR304

Parameter	Description
Radio	ETSI EN 301 511, ETSI EN 301 908-1, ETSI EN 301 908-2, ETSI EN 301 908-13, ETSI EN 303 413, ETSI EN 300 328, ETSI EN 301 893
EMC	ETSI EN 301 489-1, ETSI EN 301 489-17, ETSI EN 301 489-19, ETSI EN 301 489-52, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-6-2
Safety	EN IEC 62368-1, EN IEC 62311, IEEE 802.3
E-Mark — EMC for devices in transportation	E-Mark homologation number: 10R — 04 9019
Cybersecurity	EN 18031-1
National	CE, UKCA compliant

SmartFlex SR310

Parameter	Description
Radio	ETSI EN 301 511, ETSI EN 301 908-1, ETSI EN 301 908-2, ETSI EN 301 908-13, ETSI EN 303 413, ETSI EN 301 893, ETSI EN 300 328, FCC part 22H, FCC part 24E, FCC part 27, FCC part 90R, PTCRB
EMC	ETSI EN 301 489-1, ETSI EN 301 489-17, ETSI EN 301 489-19, ETSI EN 301 489-52, EN 55032, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-6-2, EN 61000-6-3, FCC Part 15 Subpart B, ICES-003 Issue 6
Safety	EN IEC 62368-1, EN IEC 62311, IEEE 802.3, UL E487720
Carrier Approvals	AT&T, T-Mobile US, Verizon
Climatic	NEMA TS2
Cybersecurity	EN 18031-1
National	CE, UKCA, FCC, IC, TELEC
Environmental	REACH, RoHS3 and WEEE compliant

Type Tests and Environmental Specifications

Routers undergo the following tests to ensure durability and reliability:

SmartFlex SR300 and SR304

Phenomena	Test	Description	Test levels
ESD	EN 61000-4-2	Enclosure contact Enclosure air	± 6 kV (crit. A) ± 8 kV (crit. A)
RF field AM modulated	EN 61000-4-3	Enclosure	20 V/m (crit. A) (80 – 2700 MHz) 3 V/m (crit. A) (2700 – 6000 MHz)
Fast transient	EN 61000-4-4	Signal ports Power ports Ethernet ports	± 2 kV (crit. A) ± 2 kV (crit. A) ± 2 kV (crit. A)
Surge	EN 61000-4-5	Ethernet ports Power ports I/O ports	± 2 kV (crit. B), shielded cab. ± 0.5 kV (crit. B) ± 1 kV, L to L (crit. A) ± 2 kV, L to GND (crit. A)
RF conducted	EN 61000-4-6	All ports	10 V/m (crit. A) (0.15 – 80 MHz)
Radiated emission	EN 55022	Enclosure	Class B
Conducted emission	EN 55022	DC power ports Ethernet ports	Class B Class B
Power frequency magnetic field	EN 61000-4-8	Enclosure	160 A/m (crit. A)
Dry heat	EN 60068-2-2	+75 °C (+167 °F), 40 % rel. humidity
Cold	EN 60068-2-1	-40 °C (-40 °F)
Damp heat¹	EN 60068-2-78	95 % rel. humidity (+40 °C / +104 °F)
Vibration	EN 60068-2-64 ed. 2	Vibration spectrum A.3 (rolling stock)	Category 1 (3 axis, 8 hours per axis)
Shock	EN 60068-2-27 ed. 2	half-sine, 50 g peak, 11 ms

¹ Applies to SmartFlex SR304 only.

Caution

The temperatures listed are for the basic version of the router and may vary for other versions.

SmartFlex SR310

Phenomena	Test	Description	Test levels
ESD	EN 61000-4-2	Enclosure contact Enclosure air	± 6 kV ± 8 kV
RF field AM modulated	EN IEC 61000-4-3	Enclosure	10 V/m (80 – 1000 MHz) 10 V/m (1000 – 6000 MHz)
Fast transient	EN 61000-4-4	Signal ports Power ports Ethernet ports	± 1 kV ± 1 kV ± 1 kV
Surge	EN 61000-4-5	Ethernet ports Power ports I/O ports	± 1 kV ± 1 kV ± 1 kV
RF conducted	EN 61000-4-6	All ports	10 V/m (0.15 – 80 MHz)
Radiated emission	EN 55032	Enclosure	Class B
Conducted emission	EN 55032	DC power ports Ethernet ports	Class B Class B
Degrees of protection	EN 60529	IP30
Dry heat	EN 60068-2-2	Storage +85 °C (+185 °F) Operation +75 °C (+167 °F)
Cold	EN 60068-2-1	Storage -40 °C (-40 °F)
Damp heat	EN 60068-2-30	+55 °C (+131 °F) / +25 °C (+77 °F), 95 % rel. humidity, 6 h – 6 h
Shock	EN 60068-2-14	-40 °C (-40 °F) / +75 °C (+167 °F), 3 h/3 h, 2 cycles, 3 K/min
Low Temperature	NEMA TS2, chap. 2.1.5.1	Storage -45 °C (-49 °F)
High Temperature	NEMA TS2, chap. 2.1.5.1	Storage +85 °C (+185 °F)
Low Temperature	NEMA TS2, chap. 2.2.7.3/2.2.7.4	Operation -34 °C (-30 °F)
High Temperature	NEMA TS2, chap. 2.2.7.5/2.2.7.6	Operation +74 °C (+165 °F)

Cellular Module Parameters

Tips

This section applies to SmartFlex SR304 and SR310. SmartFlex SR300 is a LAN router and does not include a cellular module.

Antenna Requirements

VSWR: < 2:1 (antenna input impedance response as a function of frequency, indicating antenna resonances and bandwidth efficiency)
SMA Connector Impedance: 50 Ω
Diversity Antennas: For optimal performance, the primary and secondary antennas should have different polarizations.

SmartFlex SR304

Parameter	Description
LTE parameters	LTE: Cat.4, 3GPP E-UTRA Release 11 FDD frequencies: B20 (800 MHz), B5 (850 MHz), B8 (900 MHz), B3 (1800 MHz), B1 (2100 MHz), B7 (2600 MHz) TDD frequencies: B40 (2300 MHz), B41 (2500 MHz), B38 (2600 MHz) FDD bit rates: 150 Mbps (DL) / 50 Mbps (UL) TDD bit rates: 130 Mbps (DL) / 35 Mbps (UL) Supported bandwidths: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz Max. output power: 23 ± 2 dBm
HSPA+ parameters	HSPA: 3GPP R8 DC-HSPA+ Supported frequencies: B5 (850 MHz), B8 (900 MHz), B1 (2100 MHz) Bit rates: 42 Mbps (DL) / 5.76 Mbps (UL) Max. output power: 24+1/−3 dBm
UMTS parameters	Supported frequencies: B5 (850 MHz), B8 (900 MHz), B1 (2100 MHz) Bit rates: 384 kbps (DL) / 384 kbps (UL) Max. output power: 24+1/−3 dBm
TD-SCDMA parameters	Supported frequencies: B5 (850 MHz), B8 (900 MHz), B1 (2100 MHz) Bit rates: 4.2 Mbps (DL) / 2.2 Mbps (UL) Max. output power: 24+1/−3 dBm
EDGE parameters	Supported frequencies: 900 MHz, 1800 MHz Data throughput: max. 236.8 kbps Max. output power: 27 ± 3 dBm
GPRS parameters	Supported frequencies: 900 MHz, 1800 MHz Data throughput: max. 85.6 kbps Max. output power: 33 ± 2 dBm

SmartFlex SR310

Parameter	Description
LTE parameters	LTE: Cat 4, 3GPP Rel. 11 FDD frequencies: B12, B13, B28 (700 MHz), B20 (800 MHz), B26, B19, B18, B5 (850 MHz), B8 (900 MHz), B4 (1700 MHz), B3 (1800 MHz), B2, B25 (1900 MHz), B1 (2100 MHz), B7 (2600 MHz) FDD bit rates: 150 Mbps (DL) / 50 Mbps (UL) TDD frequencies: B39 (1900 MHz), B40 (2300 MHz), B41 (2500 MHz), B38 (2600 MHz) TDD bit rates: 130 Mbps (DL) / 30 Mbps (UL) Max. aggregated bandwidth: 20 MHz Max. output power: 23 ± 2 dBm
UMTS parameters	Standard: 3GPP Release 8 Supported frequencies: B19, B6 (800 MHz), B5 (850 MHz), B8 (900 MHz), B4 (1700 MHz), B2 (1900 MHz), B1 (2100 MHz) DC-HSDPA bit rates: max. 42 Mbps (DL) HSUPA bit rates: max. 5.76 Mbps (UL) WCDMA bit rates: 384 kbps (DL) / 384 kbps (UL) Max. output power: 24+1/−3 dBm
EDGE parameters	Supported frequencies: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz Data throughput: 296 kbps (DL) / 236.8 kbps (UL) Max. output power: 27 ± 3 dBm
GPRS parameters	Supported frequencies: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz Data throughput: 107 kbps (DL) / 85.6 kbps (UL) Max. output power: 33 ± 2 dBm

GNSS Parameters

Tips

This section applies to SmartFlex SR304 and SR310.

SmartFlex SR304

Parameter	Description
Antenna	Connector type: SMA, 50 Ω — active
Protocols	NMEA 0183
GNSS Systems	GPS, GLONASS, BeiDou, Galileo, QZSS
Frequency Bands	GPS/Galileo/QZSS: 1575.42 ± 1.023 MHz GLONASS: 1597.5 – 1605.8 MHz BeiDou: 1561.1 ± 2.046 MHz
Sensitivity (autonomous)	Tracking: −157 dBm Reacquisition: −157 dBm Cold start: −146 dBm
Acquisition Time (autonomous)	Hot start: 2.5 s Warm start: 26 s Cold start: 35 s
Positional Accuracy	< 1.5 m

SmartFlex SR310

Parameter	Description
Antenna	Connector type: SMA, 50 Ω — active/passive
Protocols	Standard NMEA 0183 output
GNSS Systems	GPS, GLONASS, BeiDou, Galileo
Frequency Bands	GPS/Galileo/QZSS L1: 1575.42 MHz GLONASS G1: 1597–1605 MHz BeiDou B1: 1561 MHz
Sensitivity	Tracking: −163 dBm Acquisition (cold): −149 dBm (95 %)
Time to First Fix (TTFF)	Hot start: 1 s Warm start: 27 s Cold start: 29 s (open-sky conditions)
Positional Accuracy	2D: < 2 m (typ.) 3D: < 2.5 m (typ.) in open sky (stand-alone)

The 5 GHz Wi-Fi interface operates in frequency bands (specifically 5150–5350 MHz) that are restricted to indoor use only in certain EU member states. Refer to the regulatory documentation for your router model for details. This restriction applies to SmartFlex SR300, SR304, and SR310.

Parameter	Description
Antenna Connector	R-SMA — 50 Ω
Supported Wi-Fi Bands	2.4 GHz, 5 GHz
Standards	IEEE: 802.11a, 802.11b, 802.11g, 802.11n
2.4 GHz Supported Channels	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13;
5 GHz Supported Channels	36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165;
Type of Device	Access point, Station
Max. Clients in AP Mode	10
TX Power	Max. 16.5 dBm @ 2.4 GHz Max. 18 dBm @ 5 GHz;
RX Sensitivity	−96.3 dBm
AP Maximum Users	10 users (Wi-Fi module supports multi-role operation in STA and AP; multi-role does not affect the maximum number of users)

Caution

For SmartFlex SR300, SR304, and SR310, the 5 GHz supported channels and TX power depend on the selected Country Code.

I/O Parameters

Characteristics of inputs:

Logical 0/1¹	Voltage	Current	Web interface status
Log. 1 max	3 V	0.4 mA	Off
Log. 0 min	5 V	0.7 mA	On
Log. 0 typ	12 V	2 mA	On
Log. 0 max	60 V	7 mA	On

¹ The digital input status in the shell is returned via io get bin0 or io get bin1.

Digital output parameters:

60 V AC / 300 mA
60 V DC / 300 mA

PoE Parameters

Warning

IEEE 802.3at-2009 (PoE+) and IEEE 802.3af-2003 (PoE) standards are supported. Category 5 cabling with resistance up to 12.5 Ω is required. A passive PoE injector can also be used.

Parameter	Value
Input Voltage Range	42.5 – 57 V
Power Available	25.50 W
Maximum Current	600 mA

PoE PD parameters — SmartFlex SR300 and SmartFlex SR304 only

Parameter	Value
Power Supply Needed	44 – 57 V, 65 W
Power Available	2× 25.50 W (ETH0, ETH1)

PoE PSE parameters

System Configuration

Parameter	Description
CPU	2 DMIPS per MHz
Flash Memory	256 MB
RAM	512 MB
M-RAM	128 kB