SM361 Rig Switch kit - Auto activate communications equipment by vibration
SM361 RIG SWITCH OVERVIEW
It is a common problem for people with radio equipment in cars that the power will disappear when the engine is turned off. This leaves the operator frustrated if they are frequently in and out of the vehicle and don’t want to miss any important communications.
Alternately, the equipment can be hard-wired to the vehicle battery, but then the risk of leaving the equipment on and flattening the battery overnight is quite real.
Voltage Sensitive Relays have been a common solution, as they detect when the vehicle engine is running by a rise in battery voltage and use this to control equipment operation. Unfortunately many late model cars have ‘intelligent charging systems’ that may shut the alternator down at any time if it thinks the battery is sufficiently charged. This can result in turning the equipment off while the car is actually in use.
This kit is for the construction of a switching unit that will activate 12 Volt vehicle equipment whenever vehicle vibration is detected. When the vehicle is turned OFF the device starts a countdown timer that keeps the equipment operating for a preselected time period before it is automatically shut down.
The Rig Switch has three different levels of sensitivity to trigger timer events and five different time delay periods. These selections are made by positioning a jumper inside the unit.
As a kit, it is a simple construction project. A small number of parts must be mounted on a circuit board, then the module is placed into a plastic enclosure. The microprocessor that supplies the intelligence to this unit is pre-programmed and ready to use.
The image below shows the interior of the SM361 vibration sensor module:
Click on the link below to view or print the PDF version of the SM361 Rig Switch Kit manual...
| sm361_rig_switch_kit_manual_v1.pdf |
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PRICING INFORMATION
SM361 Rig Switch Kit
Qty 1-9 $37.00 + gst.
Qty 10+ $33.00 + gst.
(last updated August 2021)
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PRICING INFORMATION
- Payment can be made to Alian Electronics via EFT or Pay Pal
- All prices in $AUD and do not include the cost of freight. (Click HERE to view the Freight Information page)
- When buying from within Australia add 10% GST
- (Overseas sales are GST Free, but depending upon local policy, you may need to pay tax/duty for goods to be released by your Customs)
- When buying from within Australia by Pay Pal, add 2.4% for Pay Pal transaction fee.
- When buying from Outside Australia by Pay Pal add 3.6% for Pay Pal transaction and currency conversion fee.
- (When buying from Outside Australia using Telegraphic Transfer ( TT ) the buyer will pay transaction fees with their bank.)
- Transaction details, Freight & other charges will be shown on a Proforma Invoice supplied to you before you pay.
SM361 Rig Switch Kit
Qty 1-9 $37.00 + gst.
Qty 10+ $33.00 + gst.
(last updated August 2021)
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