- High speed 16550 UART with 16-bytes transmitreceive FIFO buffers
- Works with any PC with one available PCI slot
- OS


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A 12V 4A 2-stage battery charger specifically intended for sealed lead acid batteries in the range of 20 Ah to 44 Ah. The charger has LED indication of float & bulk charge & once the unit is fully charged the current will decrease to a trickle to maintain full battery power. Reverse polarity protection with LED indication short circuit & over voltage protection are also key features for this unit. ...

- Automatically dial up to 3 pre-programmed phone numbers
- Record your own message for notification of alarm event
- Play


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Specifically designed for 12V sealed lead-acid batteries in the capacity range 6 Ah up to 15 Ah this two-stage charger will bulk charge to 90 then automatically switch to float charging temperature compensated. The charger is very rugged with reverse polarity short-circuit & over-voltage protection. Specifications Input voltage 230 Vac Output voltages 14.4 to 15.0 Vdc bulk charging 13.6 to 13.8 Vdc float charging Output current 1A plusmn 10 Bulk to float Transition current 180m A plusmn 10 Transition voltage 12.6 Vdc plusmn 5 Indicators bulk chargered LED float chargegreen LED fault conditionboth LEDs extinguished Dimensions 90 x 70 x 130mm ...

Specifically designed for 12V sealed lead-acid batteries in the capacity range 1 to 4 Ah this two-stage charger will bulk charge to 90 then automatically switch to float charging. This plug-in charger has Approx. 1.8m of flying lead with insulated colour coded push-on spade connectors. The charger is very rugged with reverse polarity short-circuit & over-voltage protection. ...

An extremely loud two-tone piezo-electric siren mounted in a sturdy cream plastic case. The electronics which drive the piezo element & give the siren its characteristic sound are contained within the unit on a PCB & the overall frequency range can be varied by means of a preset on this board. Two links A & B are also present which if bridged with solder determine the mode of operation see table. The board is accessible by removing the bottom mounting plate secured by four screws from the main body. Operating Modes Both links open Single tone operation Link A bridged Pulsed high tone Link B bridged Two-tone as supplied Both links bridged Pulsed low tone Specifications Voltage range 6 15 Vdc Current drawn 90m A at 12 Vdc Output level at 12V110d B Leads V red 0V black 150mm Dimensions 52x 42x 27.5mmlugs are 68mm tip to tip Mounting 58mm spacing M3 ...

400 Wrms power handling Ideal for high power cabinets Overload protection circuit The pxb 2-3k 5 crossover features an advanced circuit design to preserve both the crossover & your HF drivers. Custom-built aerospace lamps are used as positive temperature coefficient series varistors to dynamically maintain a safe maximum current level to the HF driver without introducing distortion. ...

Two & four-way switch boxes connecting a stereo power amplifier to up to four pairs of speakers as required. In the 2-way version up to two pairs of speakers can be connected to the amplifiers output either separately or simultaneously provided the amplifier is able to drive two loads at once e.g. down to 4andohm so that 8andohm 2 is acceptable. In the 4-way version up to four pairs of speakers can be connected. Switching is by rocker switches on a sloping front panel. Speaker connections are via spring-loaded terminals. ...