Used on 243807. 2.03 in. lg, 2.03 in. w, 1.30 in. ht; 0.201 in. dia meeting hole centered on top; 4 screws no. 8 binder head in ea corner on top; relay square shaped; 0.125 in. dia anti-rotation boss located on bottom of relay 0.750 in. from center 0.080 in. tall; spst normallt open; control voltage:70/280 vdc, 90/280 vac rms; ac input freq:50/10000 hz; input current at max:type 3.5 ma, max 4.5 ma; turn voltage:70 vac rms min.; turn off voltage:10 vac rms max; turn on power:15 mw typ, 20 mw max; isolation (coil to contacts, coil to mtg plate) :100, 000, 000, 000 ohms; capacitance (coil to contacts) :20 pf; dielectric strength (coil to contacts, coil to case) :1800 vac rms at 60 hz; transient input voltage (max 100ms duraion) will not actuate relay:325v peak:output current rating:21 amps rms:load voltage rating:12/28 vac both rms; surge current rating:200 amps peak:power dissipation:22 watts max; contact resistance:0.050 ohms