MXO's :Nano" JST-ZH 1.5 pitch ZH, receiver for the ever popular NB4 radio transmitter! Tiny foot print, light, attractive protective case. Just 1.25 grams. 14.6 x 21.4 x8.2mm. AFHDS-3 Protocall, Hidden antenna, 3.7- 8.5 operating voltage. Perfect for the mini 1/27 scale rc cars. *Note: requires transmitter running: Nobel FW 2.0.00 or later or Nobel Pro FW 1.0.1 or later firmware. Also will work with the Paladin PL18 & Paladin PL18EV