ER500 Industrial Grade Dual-SIM 4G WIFI Router, 5-Ethernet ports, 1-RS485, 1-RS232, OpenWRT
Designed to support dual SIM for global 4G LTE networks, ER500 seamlessly switches between SIM cards to ensure uninterrupted connectivity and reliability. It offers 5x ETH ports, Wi-Fi, and serial ports. It is equipped with an OpenWRT-based, configurable OS, enabling smooth data transmission and compatibility with a wide range of devices across industrial applications.

With a complete industrial-grade design, built-in hardware watchdog, multi-layer software failover, backup, and auto recovery mechanism. Running on an OpenWRT-based OS and prebuilt web configuration, the serial-to-IP data acquisition features ensure this ruggedized cellular router reliably supports various applications in your industrial environment.

Applications
With its compact industrial housing, reliable connectivity, and flexible Linux OS, the ER500 can be used in a wide range of applications, including EV charging, traffic light monitoring, air compressor monitoring, and CCTV.
Specifications
| Hardware Platform | |
| CPU | MediaTek@ 580MHz |
| DRAM | 128MB DDR2 |
| Storage | 32MB |
| Wireless | |
| Cellular module Slots | 1 x mPCIe slot for the Cellular module |
| SIM Slot | 2 x Mini SIM (25mm*15mm); 15KV ESD protection |
| Band Options | NA: 4G LTE FDD@ B2/B4/B12/B13; 3G WCDMA@ B2/B4/B5; Carrier Approval: Verizon, AT&T EMEA/APAC: 4G LTE FDD@ B1/B3/B7/B8/B20/B28A; 4G LTE TDD@ B38/B40/B41; 3G WCDMA@ B1/B8; 2G GSM@ B3/B8; ANZ/LATAM: 4G LTE FDD@ B1/B2/B3/B4/B5/B7/B8/B28; 4G LTE TDD@ B40; 3G WCDMA@ B1/B2/B5/B8; 2G GSM@ B2/B3/B5/B8;Other options please contact Elastel representative. |
| Wi-Fi | IEEE 802.11b/g/n, 150Mbps |
| Wi-Fi mode | Support AP and Client modes |
| Antenna Connector | 2x 4G Cellular, 1x Wi-Fi, 1x GPS (Reserved) |
| Interfaces | |
| Ethernet Ports | 5 x 10/100 Mbps Ethernet for LAN/WAN configurable; 1.5KV network isolation transformer protection; |
| Serial Ports | Â 1-RS232, 1-RS485; 5-PINÂ Â industrial terminal block; 15kV ESD protection; |
| Reset Button | 1x Pinhole reset button |
| Power Parameters | |
| Power Supply | DC5-36V, over-current protection, anti-reverse connection; 2 PIN terminal block and Jack connectors; |
| Power Consumption | Working Mode: 250~310mA@12V DC; Standby Mode: 150~230mA@12V DC; |
| Indicators | |
| LED Indicators | 9 LEDs ( Power, System, NET, SIM1/SIM2, WiFi, 3x Signal Strength) |
| Physical Characteristics | |
| Dimensions | 126 × 44 x 166 mm (L×W×H) |
| Housing | IP30 Metal |
| Installation | DIN-rail mounting Panel mounting |
| Weight | 670g |
| Environmental Limits | |
| Ambient Humidity | 5 to 95% (non-condensing) |
| Operating Temperature | -35 to 75°C (-31 to 167°F) |
| Storage Temperature | -40 to 85°C (-40 to 185°F) |
| Reliability | |
| Alert Tools | External RTC with a backup button battery |
| Automatic Reboot Trigger | External WDT (watchdog timer) |
| MTBF | ≥100,000 Hours |
| Package Contents | |
| Device | 1 x ER500 device with Terminal Block preinstalled |
| Antenna | 2x Mag-mount Cellular Antenna (SMA Male, 1 meter, 12dBi),
1x RP-SMA WIFI Antenna |
| Installation Kit | Panel mount kits (DIN-rail mount kits optional) |
| Power Adapter | DC 12V/1A (optional) |
| Software Features | |
| OS | ElastOS (OpenWRT-based) with Serial-to-IP Data Acquisition programs |
| Configuration management | WebUI, Local CLI, Remote configuration, factory reset/backup, Syslog local/remote export |
| Network Protocols | PPP, PPPoE, SNMP v1/v2c/v3, TCP, UDP, DHCP, RIPv1/v2, OSPF, BGP, DNS, DDNS, HTTP, ARP, QoS, SNTP, Telnet, SSH… |
| VPN | PPTP, L2TP, GRE, IPSEC VPN (IKEv1/IKEv2), OPENVPN protocols, Supports CA digital certificate |
| Serial to IP | Modbus RTU/TCP Data acquisition, MQTT, HTTP, OPC UA |
| Reliability & Security | WWAN and WAN Failover, multi-layer detection and  auto recovery mechanism, firewall, ACL, port mapping, virtual IP mapping, IP-MAC binding |
| Secondary Development | OpenWrt-based OS with SDK support |
| Warranty | |
| Warranty Period | One year |











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