This page explains the JEMRF Wireless Power Detect Sensor
Wireless Power Detector Sensor

Product Description

The Wireless Power Detector Sensor monitors AC power 100 to 240 VAC for power loss. In less than 2 seconds of power lost, it sends state change to the monitoring server via the local Gateway. This product assumes that the local Gateway, WiFI access point and the Internet Router are all on backup power (UPS). The sensor has internal storage power to last for just over 2 minutes after power loss. After the initial message of power loss, With the normal update time of minute, at the next one minute interval it will report a status it will send the initial message power is off, and again a minute later that power is still off. When power is restored it will power up and report power has been restored.

Installation

Installation is easy, just plug it into the power circuit you want to monitor.

Wireless Power Detect Sensor

Testing

The sensor Id is at the bottom of the label. Using the JemRF python application rf_serial.py or the sensor list on a WiFi Gateway, you will see the sensor appear in the list.

Product Specifications

Electrical

  • Standard US AC outlet for 120 VAC.
  • 2 pin AC US prongs

Functional

  • Standard JemRF wireless sensors, refer RF Communications section for all the details
  • Power status is provided with On and Off State messages when the device to come out of sleep mode, transmit a reading and then go back to sleep

Messaging details

  • BUTTONON- (sent when power is Lost)
  • BUTTONOFF (sent when power is Restored)
  • STATEON- (the switch state is sent every INYVL minutes indicating power is Off)
  • STATEOFF (the switch state is sent every INTVL minutes indicating power is On)

Physical

  • 3 inch x 2 inch x 2 inch

Default configuration

  • Type 1 (Type 1 sensor)
  • NOMSG1 (Sends 1 switch readings every time the switch state changes)
  • INTVL001 (Sends the switch state every minute)
  • SLEEP (puts the device into sleep mode)
  • Refer device configuration for more details