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August 31, 2026 3 min read
Installation instructions for the GE Security ESL 505 CleanMe Module, an interface between 500 Series two-wire smoke detectors and a UL Listed control panel.
Installation instructions for the GE Security ESL 505 CleanMe® Module — an interface between a 500 Series two-wire smoke detector and a UL Listed control panel.
The ESL 505 CleanMe® module interprets a 500 Series detector's trouble (CleanMe®) signal and outputs it to the control panel via relays, letting installers remotely receive maintenance alerts (e.g. detector needs cleaning) before a false alarm occurs. It also flags general detector trouble such as a hardware fault. The module can additionally convert two-wire smoke detectors to a four-wire panel input, useful when a panel lacks two-wire smoke detector loop inputs. Each module accommodates up to 20 smoke detectors.
| Switch | Description |
|---|---|
| 1 | ON = 6–12V, OFF = 12–24V |
| 2 | ON = Enables CleanMe®, OFF = Disables CleanMe® |
Important: Switch 2 on the back of the 500 Series detector must be ON to enable the CleanMe® signal.
Module terminals J1–J12 provide CleanMe® relay, Alarm relay, and Supervision relay connections along with detector loop in/out terminals, per the specific wiring diagram for your configuration (see the downloadable PDF for full wiring diagrams).
| Compatibility ID | Model Numbers |
|---|---|
| S09A | 429AT, 521B (sw on), 521BXT (sw on) |
| S10A | 429C, 429CT, 521B (sw off), 521BXT (sw off), 711U, 711UT, 721U, 721UT, 722U |
| S11A | 429CRT, 429CST, 429CSST, 521CRXT, 731U, 732U |
ESL505 — CleanMe® module
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