Acme Engineering Prod. Ltd.

- Model WS Series - Wireless Sensors/Transmitters



The Acme WS GasPost Series toxic or combustible gas sensor/transmitter measures the concentration of the target gas in an enclosed area and transmits this value to the control panel via a 900MHz or 2.4 GHz wireless medium. The WS Wireless GasPost Sensor / Transmitter includes a high gain antenna concealed inside the enclosure as well as a built-in battery pack that can be easily accessed and replaced (battery-operated verson). Optionally the WS can also be powered from a 24VAC source. This version(WS-24) may have on-board relays to operate the ventilation equipment directly while transmitting their readings to the control panel for monitoring purpose only.


The WS employs a range of diffusion-type electrochemical and/or catalytic bead sensors capable of detecting a broad range of toxic and combustible gases. It provides a quick and reliable detection method of these gases with long term accuracy and trouble free operation.

Designed to act as fixed in-situ safety monitors, the WS transmitters automatically operate the mechanical ventilation system of a facility upon detection of hazardous gases, thereby protecting occupants, personnel and gas-sensitive goods and products.

With the increased use of gas detection in maintenance and industrial facilities, the WS allows installers and users to meet code requirements economically using commercial-grade gas detection equipment.

The WS contains all the well-known standard features of ACME’s gas detection line; a robust enclosure, latest sensor technology and state-of-the-art electronics.

  • FCC/IC/ETSI/CE approved RF modules
  • Easy installation, virtually eliminsting cost of installation materials
  • Battery operated with 2-year battry life, or powered from a local 24VAC source
  • NEMA 3 robust enclosure
  • Remote sensor/transceiver on a wireless communication network compatible with Acme’s new CEW-Series centralized wireless multipoint/multi-gas detection and control panel

  • Energy savings through the intermittent operation of ventilation equipment in enclosed facilities.
  • Suitable for garages, tunnels, warehouses and other enclosed commercial locations where a hazardous build-up of gases may occur.
  • Ideal for retrofit of existing buildings to improve safety and conserve energy.
  • Designed for multiple stage projects.

  • Gases detected: CO, NO2 , O2 , NH3, H2, H2S Combustible gases(24VAC PowerModule only)
  • Sensor Technology: 3-electrode catalytic bead electrochemical cell
  • Sensing Method: Diffusion
  • Power Requirement: Self-powered from a built-in 12V battery pack(8x1.5V) or hardware to a constant 24V local power source
  • Operating Temp.: -4ºF to 104ºF (-20ºC to +40ºC)*
  • Humidity Range: 15-95% RH
  • Accuracy: +/- 2% of calibrated value
  • Repeatability: 2% of signal
  • Expected sensor Life: 7 years for CO only;
  • 2 years for other gases.
  • Battery Lifetime: 2 years
  • Enclosure:
    • NEMA 3
    • Polystyrene
    • Surface mounting
  • Dimensions: 182mm X 180mm X 111mm (7.2” X 7.1” X 4.4” )

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