4PM Plus Transmitter – Super Response Digital Proportional RC SystemYour T4PM+ includes the following components: T4PM+ Transmitter R304SB/E OR R334SBS OR NO receiver Dry Battery Holder Mini Screwdriver Transmitter SpecsT-FHSS SR/T-FHSS/S-FHSS System, Wheel Type, 4 ChannelsCommunication Method:Bidirectional protocolMaximum Operating Range:100m (Except the MINIT system) (Optimum condition)For Safety:F/S, B-F/S, IDTransmitter Frequency:2.4 GHz bandRF Power Output:100mW EIRPPower Requirement:(Dry Cell Battery) Penlight x3 (4.5V)Current Drain:150 mA or lessTransmission Antenna:1/2λ di-poleReceiver SpecsR304SB Size:35.1 x 23.2 x 8.5 mm1.38 x 0.91 x 0.33 in Weight:6.6 g Operating Voltage:DC 4.8 ~ 7.4V NEVER USE THE R304SB-E IN GP CARSR334SBST-FHSS SR Size:33.9 x 22.3 x 11.3 mm1.33 x 0.88 x 0.44 in Weight:7.5 g0.26 oz. Operating Voltage:DC 3.7 ~ 7.4V Contents 1x T4PM+ Transmitter 1x R304SB Receiver 1x Dry Battery Holder 1x Mini Screwdriver