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ACME Engineering CEW-4 Control Panel


The ACME CEW4 series is a microprocessor-based up to 4 channels multigas wireless detection and control system that can be used with the wireless CO and NO2 GasPost sensors. The communication between the Control Panel and the remote Sensor-Transmitters is accomplished through a 900 MHz or 2.4 GHz wireless network.

The LCD display provides a continuous digital read-out of gas concentrations for each sensor-transmitter, as well as levels status (L, H & A), the battery voltage and the time elapsed in minutes since the last transmission.

In its most basic configuration, the CEW4 multigas wireless detection Control Panel supports up to 4 channels where each channel is treated independently controlling a fan zone. In this configuration, all channels have their own SPDT relay output at Low gas levels and/or a 4-20mA signals proportional to the gas readings. In a more practical application, the channels are divided into groups that collectively serve various fan zones. In this latter configuration each group (zone) has a set of relay output contacts at Low gas levels and/or 4-20mA signal proportional to the demand from that group. High & Alarm gas level SPDT relay outputs are always common to all channels.



  • FCC/IC/ETSI/CE approved RF modules for up to 4 remote sensortransmitters.
  • Minimal installation cost - virtually no field wiring required.
  • Continuous 2 year Batterypowered sensor operation with self diagnostics. Sensors are also available for 24V AC operation.
  • Relay outputs or zoned 4-20mA outputs from the Control Panel.
  • “Plug-and-play”.



Typical Wiring Diagram: