About half the price you'd pay at those 'box" stores.
works great including warning chime and delayed shut-off.
Be careful not to turn the ignition off and back on too quickly or it won't power up the head unit. Also, if you turn the ignition on and back off too quickly it will may fail to turn the head unit off. To reset each condition, just turn the ignition on or off for at least 10 seconds and all is well again.