Panasonic RT-3 voltage sensitive type slim, space-saving type (33 mm 1.299 inch wide) with four independent points on a base measuring 33 × 67 mm 1.299 × 2.638 inch. This contributes to a more compact control panel. Can be mounted on a DIN rail or mounted directly (by screw). Equipped with an LED display to allow easy confirmation of operation. Possible to select a relay for use in the 4-point terminal in accordance with its application.