Ethernet and Serial Brains [Ethernet Brains are Obsolete 3/1/22]

Power Requirements

5.0 - 5.2 VDC at 750 mA maximum (does not include module power requirements)

-W Models: 5.0 - 5.2 VDC at 1.0 A maximum (not including module requirements)

Memory

16 MB RAM

Backup battery for real-time clock

Rechargeable (recharges whenever the brain has power). 5-year life when power is off (replacement part number: SNAP-PAC-BATTERY-ML2430). (Models manufactured before August 2007 have a 3-volt CR2032 lithium battery, available in retail stores. See original user guide for replacement steps.)

Hold-down screw

Torque: 8 in-lb (0.9 N-m)

Operating Temperature

-20 to 60 °C

Storage Temperature

-40 to 85 °C

Humidity

0 - 95% humidity, non-condensing

Agency certifications

-EB models (except -EB-W): UL, CE, RoHS, DFARS; UKCA
-EB-W models: UL, DFARS, UKCA; U.S., FCC Part 15 Subpart C; Canada, IC RSS-210
-SB models: CE, RoHS, DFARS; UKCA
-FM models only: Factory Mutual approved

Warranty

30 months from date of manufacture

Ethernet Brains (EB) only

Wired Ethernet Net­work Interfaces

IEEE 802.3 network, 10Base-T and 100Base-TX. Automatic MDC/MDI-X crossover (Ethernet crossover cable not required for direct connection to PC). Two switched interfaces, allowing multi-drop (daisy-chain) or standard star network configuration.

Maximum Ethernet Segment Length

100 meters with Category 5 or superior UTP
For 100 Mbps at this distance, use Category 5 or superior solid UTP.

Wireless LAN interface^*
  Topologies
  Security

  Frequency 802.11a
  Frequency 802.11b/g
  Transmit Power
  Antenna Connector
  Roaming

Separate IP address
Infrastructure, Ad-Hoc
802.11i: AES - Compatible with WPA2 Personal, TKIP - Compatible with WPA Per­sonal, WEP. Note: TKIP/AES security is not supported in Ad-Hoc mode.
5.180 - 5.24 GHz, 5.745 - 5.825 GHz
2.412 - 2.472 GHz, 2.484GHz
15 dBm maximum
Reverse polarity SMA (RP-SMA or RSMA)
Supported within an SSID (Service Set Identifier) only

Serial Brains (SB) only

Network interfaces

RS-485, 2- or 4-wire, twisted pair(s), with shield

Serial data rates

300 baud to 230.4 Kbaud

Range: Serial multidrop

32 stations maximum on a segment (including PC, controller, repeaters, and I/O units); up to 3000 ft (914 m) on a segment

Connector screw

Torque: 1.7 in-lb (0.19 N-m)

* Requires Wired+Wireless model (SNAP-PAC-EB1-W or SNAP-PAC-EB2-W)