Block #1, remote power on/off with panic button.
The “ Watch Box “ can be powered on or off, reset, or the panic function can be activated using the XT-62 remote transmitter ( 2 each ). The RF-1055KE receiver mounted inside of the unit, gets it’s commands from the XT-62 remote control transmitter ( RTC ). The unit is Powered on when you push the “ Lock “ button. Powered off by pushing the “ un-lock “ Button, and the panic function can be activated by holding down the horn button for 3 or more seconds. The “ Watch Box “ can be reset by cycling the power off then on, using the remote control transmitter. Other options with the XT-62 transmitter can be programmed and can be used with the Interactive option. The XT-62 has an operating range of 500 feet
(open air), with an optional long distance antenna that transmits up to 1200 feet (open air).
Block #2, power distribution, on/off relay circuit.
The “ Watch Box “ can be powered by it’s own 12volt DC battery supply, or using the built in cigarette plug adapter, RY1 determines witch power is used. When the cigarette
plug adapter is used, the 12 volts from the external source energizes RY1, and uses the 12 volts from the external source to power the unit. If no external power source is used, the unit is powered by it’s internal 12 volt battery. In the case that an external 12 volt source is being used, and for some reason the external 12 volts is removed, C1 will hold the unit on
until the internal 12 volt battery takes over, with no loss of protection. When the unit receives the power-on signal, RY2 is energized and turns on RY3. As long as RY3 is on,
+12 volts is applied to the remaining circuits of the unit. When the unit receives a power-off signal, RY4 is energized, causing RY5 and RY3 to de-energize and remove the +12 volts from the alarm circuits. The remote on – off unit has +12 volts applied to it as long as
a power source is available, regardless of the unit being armed or not.
Block #3, motion sensor.
The “ Watch Box “ uses the Optex RX-40PI, Passive inferred detection for motion sensing.
It features a 40-foot deep by 40-foot wide detection zone, with Quad Zone logic for small animal immunity. This requires that 4 of 78 zones detect an intruder. Temperature compensation logic, keeps the unit from false alarming for ambient heat. The unit can operate in temperatures of –32 degrees F to + 130 degrees F. Once the Optex RX-40PI receives power from block #2, it goes through a 30 second circuit warm-up. After the warm-up the RX-40PI produces a inferred digital image of the protection zone in it’s internal processor. When the unit detects a rapid temperature change in the protection zone, usually an intruder or fire, a signal is sent from the RX-40PI to block #4 for alarm processing. As long as motion or heat is being sensed, an alarm signal will be sent to block #4 for processing.
Block #4, alarm circuit.
The “ Watch Box “ alarm circuit consists of 4 individual sections that work together to provide complete protection. The first section is a delay on timer, it is activated at power up or after a manual reset. Its purpose is to keep the alarm output off until all of the electronics are stabilized. The one-minute count down timer, keeps the output of relay RY7 turned off to keep RY10 off until the remaining circuits stabilize. After the one minute warm up, RY7 will energize RY10, to allow for siren activation. The second section is a count down timing circuit, once activated the timer will keep the alarm on signal on for 30 seconds. The third and fourth sections of the alarm consist of one of two relays, RY6 processes inputs from the motion detector and RY9 processes inputs from the option plugs. An activation signal from either relay will turn on RY10 for 30 seconds, the output of RY10 will activate the siren and energize RY11 to activate any external notification device you may have for the 30 seconds. The alarm will then reset and wait for the next alarm on signal.
Block #5, options. ( See our Watchbox Options Page for individual options )
The “ Watch Box “ can monitor several options at any given time. The options interface is a simple parallel circuit that can simultaneously monitor several inputs. Each option will have a +12volt and a ground connection, as well as a signal feed back connection. The feed back connection will provide the positive detection signal that will be sent to the alarm circuit ( Block #4 ) for processing.
Block #6, audible siren and external notification.
The “ Watch Box “ has an audible 115db dual tone siren, that is driven by the output of the alarm circuit ( Block #4 ). When a positive detection signal is processed, RY10 sends the signal to the 115db siren, and to RY11 to turn on any external signal device. Some external signal options could be, lights, camera, modem or almost any other notification or action device.
Block #7, + 12 volt DC power sources
The “ Watch Box “ has two standard power sources. First, an internal 12 volt lantern battery, and second is a cigarette lighter plug. It can be plugged into any cigarette lighter available in most vehicles. The power from Block #7 connects to Block #1 for the remote on / off circuit and to Block # 2 for power distribution to the remaining circuits. A battery charging system in the unit can be used to keep the internal battery charged. The charging systems could be a simple Solar panel mounted on the “ Watch Box “, or the battery could be charged directly from the +12 volt cigarette lighter circuit. |
