{"id":"automationdirect-bx-dm1-18ar","model_id":"BX-DM1-18AR","name":"AutomationDirect BX-DM1-18AR","summary":"The BX-DM1-18AR is a BRX Do-more stackable micro brick programmable logic controller. It provides 10 AC discrete inputs and 8 relay discrete outputs, one RS-232/RS-485 serial port, a microSD card slot and battery-backed retentive memory. It is programmed in ladder with Do-more Designer software version 2.0 or later and accepts up to eight expansion modules.","study_notes":["Total memory is 192k words, split into 64k words of ladder memory and 128k words of user data memory.","Serial port is RS-232/RS-485 on a 3-pin terminal, with port speeds up to 115.2k baud.","Supported port protocols: Do-more protocol, Modbus RTU master/slave, ASCII in/out, K-sequence slave, and a non-secure HTTP webserver for programming and monitoring.","Real-time clock/calendar, retentive memory and battery backup are all included.","Up to 8 expansion modules can be added; maximum number of PID loops is 100+ (configurable to memory limit).","Discrete inputs are 10 points at 120-240 VAC, arranged as 2 isolated commons of 5 points each.","Discrete outputs are 8 Form A (SPST) relays, arranged as 2 isolated commons of 4 points each, rated 2 A per point; nominal output voltage 12-48 VDC/24-240 VAC.","Requires a BX-RTB18 or BX-RTB18-1 terminal block kit or ZIPLink pre-wired connection cables.","Ships with a BX-RTB03S terminal block and a D0-MC-BAT battery.","Item shipping weight is stated as 0.95 lb; country of origin USA, HS code 8537.10."],"safety_notes":["UL Listed, file # E185989; no UL Recognized, UL Hazardous or CSA file number is stated.","RoHS status: Yes; CE declarations and EU REACH document are referenced.","A lithium button battery is installed (UN3091, lithium content 0.07, packaging instruction 970); replacement battery D0-MC-BAT, generic CR2032.","External power requirement is 120-240 VAC."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/programmable_controllers/brx_plcs_(stackable_micro_brick)/plcs_-a-_cpus/bx-dm1-18ar","title":"BRX Do-more PLC: 10-pt in, 8-pt out, serial port, (programmable logic controller) (PN# BX-DM1-18AR) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/BX-DM1-18AR_cutsheet.pdf","title":"BX DM1 18AR cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":8,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"plc","manufacturer":"automationdirect","controllers":[],"program_memory_words":64000,"data_memory_words":128000,"discrete_inputs":10,"discrete_outputs":8,"serial_ports":1,"supply_voltage":"120-240 VAC","joints":[],"protocols":["modbus-rtu"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-bx-dm1-18ar","license":"https://creativecommons.org/licenses/by/4.0/"}