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August 31, 2026 8 min read
Information addendum for the ELK-C1M1 Dual-Path (Cellular + IP) Alarm Communicator, covering ElkLink remote setup, M1 Control programming, ElkRP connections, and the diagnostic utility.
Information addendum for the ELK-C1M1 Dual-Path (Cellular + IP) Alarm Communicator, covering ElkLink remote services setup, M1 Control programming for C1M1 communications, ElkRP remote programming connections, the C1M1 Diagnostic Utility, and hardware overview — topics not covered in the main C1M1 Install Manual.
In addition to super-fast, dual-path alarm communications, the C1M1 supports Elk-RP remote programming of the M1 Control by the alarm company, and remote services operation by end customers — both without any need for local port forwarding or static IP address assignment.
Important compatibility notes:
The ElkLink website provides a login portal for end customers, who can arm/disarm their M1 system through the C1M1, set up email/text notifications, and view history. Limitations: ElkLink only allows operation of a single area/partition (Area #1), and provides only a single end-customer login per C1M1 — multiple family members must share one login.
Important: Setting up end-customer logins in ElkLink can only be done by alarm company personnel holding Admin or Reg authority credentials. ViewOnly personnel can review but not create/edit.
The M1 Control will not allow remote arm/disarm by an end customer unless a Remote Disarming Code is programmed into the C1M1 device setup. This code must match a functional, operating Arm & Disarm User Code programmed in the M1 Control.
Setup may be done via Keypad Installer Level programming or via ElkRP Programming Software.
Enter Installer Level Programming: press ELK, 9, RIGHT arrow, then enter the installer programming code. Navigate to Menu 08, Telephone Account Setup, and press RIGHT to select. Telephone #1 is the one and only number that MUST be programmed to use the C1M1.
Of the M1's 8 available telephone numbers, only Telephone #1 is required to enable C1M1 cellular/IP communications. The other 7 can still be used for digital/voice dialing over a POTS line — e.g. Telephone #2 as a digital dialer backup, since C1M1 already provides dual-path (IP + Cellular) backup on its own.
Reporting Codes (Menus 09–13): for each reporting code (Zone, User, System Event, etc.) you want reported, enter a non-zero value (e.g. 01, 99). A value of 00 means it will NOT be reported.
Download and install the latest ElkRP PC Programming Software (v2.0.34) from the Elk Products website. Create a new (blank) client M1 account in ElkRP unless one already exists for this M1 Control.
Two ways to connect ElkRP to the M1 Control with a C1M1 installed:
Legacy connection methods still supported: (A) Local IP connect from a PC on the customer's LAN to the C1M1's LAN (IP) port — default setting is Enabled > Non-Encrypted Only (other options: Encrypted Only, Non-Encrypted & Encrypted, or Disabled; changing requires the C1M1 Diagnostic Utility and, if encrypted, a shared AES passphrase/key). (B) Local Serial connect from PC to the M1 main serial Port 0 — rarely used/not recommended since it disrupts C1M1↔M1 interaction.
Trip several alarms on the M1 Control and verify the Central Station receives them. If transmissions are unreliable:
A screw-on, externally mounted remote cellular antenna can replace the factory stubby antenna to reach better signal areas. Elk offers a magnetic-mount remote antenna with a 6-meter (~19 ft.) cable, part number ELK-WA003.
This software utility's primary purpose is to provide local diagnostic information during a support call with Elk Technical Support. It is not required for setup of Central Station alarm reporting (all CS settings are established via ElkLink) — it provides read-only visibility of those settings. Beyond alarm reporting, it enables local options requiring this utility:
Important: Inbound LAN connectivity is factory-enabled to Non-Encrypted Only on Port 2101. Enabling Encrypted connectivity via the Diagnostic Utility automatically sets the port 1 digit higher.
| Component | Description |
|---|---|
| Cell (Service) Red LED | Normal = ON solid (cell tower in range, connection established). Blinking = limited/no service. |
| LAN (Activity) Green LED | Normal = Blinking (LAN communication occurring). |
| ElkLink (Connect) Orange/Yellow LED | Normal = ON solid (connected to ElkLink portal). A continuous connection is not mission-critical for CS reporting and may briefly be off. |
| Removable Terminal Block | Power Input 12 VDC, supplied from an Aux. Power output on the M1 Control. Input/Output terminals not currently enabled (future use). |
| RS232 Port (3 Pin) | Connects to the M1 main serial Port 0 via the supplied 3-wire cable. |
| LAN (IP) Port | Connects to client's IP LAN for dual-path communications. If no LAN is available, C1M1 works in single-path (Cellular Only) mode. |
| USB Port (Mini B) | Local USB PC connection for programming the M1 via ElkRP — no need for an RS232 port or to attach the PC to the customer's IP network. |
| 7 Segment Display | Sequentially shows Signal Strength (b + digit 0-5), Error Codes (E + 2 digits), and IP Address (A + digits) one character at a time. |
| Code | Meaning |
|---|---|
| E01 | Application not loaded |
| E02 | Radio Module Power Fail |
| E03 | No SIM card installed |
| E04 | Inactive Unit |
| E05 | Low (Poor) Signal Strength |
| E06 | No Service or unregistered on Cell Network |
| E07 | Unable to communicate with M1 |
| E08 | Cellular radio module not detected |
| E09 | No Internet Service (LAN detected) |
| E10 | No LAN detected (check cable) |
| E11 | Central Station not configured in ElkLink |
| E12 | CS Receiver failed to respond |
| E13 | No DHCP Server found |
The LAN IP address (e.g. A 1 9 2 . 1 6 8 . 0 . 1 0 0) displays one character at a time during the first 2 minutes after power-up; CS reports take priority and may interrupt this display. Repeat the display by removing the cover and pressing the tamper switch's rubber plunger 5 times quickly.
Communications activity indicators: "0" = clockwise rotation of the outer 6 display elements for Central Station comms (with a decimal point if sent over IP/Ethernet). "8" = figure-8 circulation of all 7 elements for ElkLink comms. "o" = clockwise rotation of the lower 4 elements for USB serial comms.
Elk Products, PO Box 100, 3266 US Hwy 70 West, Hildebran, NC 28637. Phone: 828-397-4200. Fax: 828-397-4415. Website: elkproducts.com.
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