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Product Features:

WF***0 is based on Siemens industrial-grade GSM modems, having an elevate quality-price rate, which distinguish themselves for their proven reliability and solidness and their tiny dimensions which makes possible using them in any kind of environment.
Photo depicts a Siemens modem coupled with out MCU control circuit, which, thanks to its five Relay outputs and its seven digital s, can be interfaced with existing or custom made external devices, like threshold alarms and intrusion detectors, and send an SMS message upon event detection, or control switching appliances when receiving a control message sent by SMS.
Alternatively, an optional circuit equipped with an Analog-to-Digital converter, it is possible to measure varying quantities, such as temperatures or gas concentrations, converting them in numerical figures and sending them by SMS.
WF***0 can directly provide its customer with all needed hardware and install it, whenever necessary.
Thanks to our commercial partnerships, we can take advantage of special purchasing conditions for big stocks: contact us to receive an estimate price depending on your needs.

It already has the funtions as following:

Threshold alarm for money box full and also when the money box is full, then will inhibit the coin selector.
Threshold alarm for money box for money amount alarm.
Intrusion detector , and upon event detection will send the SMS to the management.
Power failure alarm, and upon power failure, then will send a SMS to the management.
System failure alarm, and upon power failure, then will send a SMS to the management.
With WF***0, managing staff can immediately acknowledge which one products have been sold out , to promptly recharge the distributor with new products, and never remain with an empty machine having no items to be sold.