Specially designed to interface any equipment or device to provide basic wireless SMS alerting, remote monitoring and control. Aplus is simple to use yet is packed with powerful functionalities to meet a wide ranging industrial and commercial applications. For basic remote monitoring and control of devices in small scale projects or even home usage.

Aplus Messenger II AM910 is a versatile SMS alert device suited for most monitoring needs. Aplus is simple to use yet is packed with powerful functionalities to meet a wide ranging industrial and commercial and residential applications.

• Ease of use
  Access to the user configuration is done with any Terminal Emulation software. Example Microsoft ™ HyperTeminal™. The configuration menu is easy to understand. No training is needed.
• Flexible User configuration
  Configuration can be changed easily with any local computer. Only authorized with the correct user ID and password can access Aplus.
• Standalone operation
  Housed in a powder coated mild steel enclosure complete with internal industrial modem, monitoring controller and flexible operating firmware. It is very easy to setup, install and use.
• Microcontroller based design
  It is not a PC hardware and does not contain moving parts like hard disk, CD-rom drive that can affect its reliability.
• Low power consumption
  Because it does not consume much power, Aplus does not generate heat and will run for 24 hours without worries of breaking down. In the event of incoming power failure, it can operate for hours on a small capacity lead acid battery / power supply unit.
• Small
  The dimension is just 82(L) x 25(H) x 110(D) mm and weighs a mere 345 grams, it can be fitted into any chassis or equipment cabinet or be obscurely installed in any corner of the equipment room.
• Repeat SMS
  If enabled, when an alarm is triggered, the SMS will be sent repeatly to the operation and forward group repeatly at the interval specified during software configuration. To cancel repeat sending, any mobile phone from the operation or forward must acknowledge to Aplus by replying the acknowledge command. Once Aplus received the acknowledgement command it will stop sending further SMS for this trigger.
• System Health Check
  This allows user to check, via SMS to check that the Aplus unit is functioning properly. User can perform health check by sending a SMS health check command.
• Remote Phone Management
  Re-assigning of operation personnel, a change of mobile phone number is also common. Rather than having to physically go to the installation site with a notebook computer, the authorized personnel can perform the change from anywhere using their mobile phone. Where there are many installed sites, distance or time is a concern, this becomes very efficient.

Most equipment today does provide some form of alerting signal to interface to monitoring devices for reporting of various malfunctions or abnormalities. There are various kinds of signal that the equipment can send out, most common of which are opening or closure of one or more switch (relay) contacts. UPS usually provide signals such as incoming power fail, battery mode, battery level low, and switchover failure. An air-conditioner system may provide signals such as system on/off, compressor over-temperature, low gas pressure, etc.

Equipments to be monitored are connected to Aplus Messenger II using these alarm signaling contacts. Aplus Messenger II keep a constant watch over all the contacts. Whenever any contact input changes status, (either from a close to open or from an open state to close state) it is captured by Aplus Messenger II. It will then process the input according to the configuration provided by the user. The correct SMS messages will be sent to one or more mobile phone users. Up to 6 + 1 mobile phone users can be simultaneously contacted.

Aplus Messenger II is so fast in capturing the change of status of any signaling contacts that no event will be missed out. Up to 8 inputs can be monitored directly. The flexibility of Aplus Messenger II is in allowing remote query of input status using SMS.

To change contacting mobile phone number is also very easy. The authorize personal remotely using SMS command to add, change or delete mobile phone number in Aplus Messenger II.

Aplus Messenger II is a 2-way device. Besides monitoring inputs and act upon such inputs it also allow mobile phone users to compose SMS messages to it. When Aplus Messenger II receives any SMS, it will look into its memory bank to see what it is supposed to do and action according. Non action SMS are ignored.

Up to 4 relays can be turned on and off by messages received from mobile phones. Users can define individual messages for each relay output. For example, one can specify a message "On Cooling Tower" for turning on relay number 2, "Off Cooling Tower" to turn it off. Any meaningful text or hard to understand combination of alphanumeric characters can be specified for each of the 'ON' or 'OFF' actions.

Querying input and output status. A user-defined message is sent back to the same mobile phone after a relay action has taken place. Creating action and acknowledgement messages are done with the same ease as that of input monitoring, also via Hyper Terminal.

Switch on / off devices remotely. Authorized groups can also query the status of an input or output. This is very useful feature to determine the present status of an input or output. The enquirer need not wait for an alarm to happen in order to receive the given I/O status. All the input and relay output status can also be displayed through Serial Terminal Emulator. The user simply connect using RS232 serial cable.

Aplus Messenger II has a feature to allow users to remotely add, change or delete any mobile phone numbers in Aplus Messenger II memory.

Re-assigning of operation personnel, a change of mobile phone number is also common. Rather than having to physically go to the installation site with a notebook computer, the authorized personnel can perform the change from anywhere using their mobile phone. Where there are many installed sites, this feature saves time and effort.

If enabled, when an alarm is triggered, the SMS will be sent repeatly to the operation and forward group repeatly at the interval specified during software configuration, (2 - 30mins). To cancel repeat sending, any mobile phone from the operation or forward must acknowledge to Aplus Messenger II by replying the acknowledge command. Once Aplus Messenger II received the acknowledgement command is will stop sending further SMS for this trigger.

Integral to the design of Aplus Messenger II is a GSM 900/1800Mhz industrial grade modem. Its capabilities and performance are highly optimized by the operating firmware. Any change in the GSM signal and receiving conditions are detected quickly and the software automatically takes care of signal errors.

All the input and relay output status are displayed in HyperTerminal. The user simply connect to Aplus using RS232 serial cable and select 'View I/O status', the status is instantly displayed.

Besides running the necessary program to perform all the required functions, Aplus Messenger has diagnostic routines running alongside. Being a monitoring device, Aplus Messenger II must have a very high operating reliability and stability. Every section of Aplus Messenger is monitoring each other.

Should the modem fail to perform its required role, the controller will interrogate and restart the modem. If the web server program 'hangs' the other circuitries will reset the controller. If everything else fails, an independent watchdog circuitry will come in to 'cold boot' the whole system.

SMA Mount R/A Unity Gain Antenna, 10 and 6 way screw terminal block, screws, slot screws driver, Mounting plate, Serial cable, Switching Power Adaptor, User Manual in CD ROM

For monitoring and remote control of equipments and machines that are able to provide dry contact signals. 4 digital outputs with pulse functions extends control functions. Suitable for door access control, On/Off equipment remotely, resetting of Routers, Network switches, etc. Some application examples are:-

• Machines, Standby Power Generator, Electrical Panels, Pumps, Uninterruptible Power Supplies, DC rectifier systems, Vending Machines, Fire Alarm Panels, Gas monitoring systems, ATM machines, Security Systems, Fishery, Cold rooms, HVAC systems, Door Security, Network equipment, and more