[![Si-RM350_manifold_2_way](/sites/default/files/styles/product_image/public/images/IMA_28138_Si-RM350_A2L-A3_Front.png?itok=nH5Vs8A_)](https://www.kimo-instruments.com/sites/default/files/images/IMA_28138_Si-RM350_A2L-A3_Front.png "Si-RM350_manifold_2_way") [![Si-RM350_manifold_2_way_hose](/sites/default/files/styles/thumbnail/public/images/IMA_28138_Si-RM350_Left_0.png?itok=rUOkoPlC)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/IMA_28138_Si-RM350_Left_0.png?itok=qg3P39CC) [![Si-RM350_manifold_2_way](/sites/default/files/styles/thumbnail/public/images/IMA_28138_Si-RM350_Right.png?itok=QQcq_Hyg)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/IMA_28138_Si-RM350_Right.png?itok=AP0qKrc-) [![Si-RM350_manifold_2_way_hose](/sites/default/files/styles/thumbnail/public/images/IMA_28138_Si-RM350_25831_Hoses.png?itok=_5eetuKJ)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/IMA_28138_Si-RM350_25831_Hoses.png?itok=ZWGxItQQ) [![A2L A3 compatible](/sites/default/files/styles/thumbnail/public/images/WEB_A2L-A3.png?itok=_Cs-5sCG)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/WEB_A2L-A3.png?itok=VGrgi6iJ) Si-RM350 digital manifold gauge can be used to commission and service all types of refrigerant-based installations: heat pumps, air conditioning, refrigeration and reversible systems, from domestic systems to complex industrial machines. Very easy to operate, this digital manifold features the latest technologies for fast, comprehensive system diagnostics. Its smart digital assistant guides the operator in every situation to help him achieve his objectives in the best possible way. ##### A1 / A2L / A2 / A3 refrigerants compatible Compatible with some B1 refrigerants, see list of refrigerants for details on which refrigerants are compatible. This HVAC digital manifold must not be used with ammoniac refrigerant (NH3 / R717). [ Technical Data sheet ](https://www.kimo-instruments.com/sites/default/files/files/DS_Si-RM350_Si-RM450_EN_12-06-25_1.pdf) [ User manual ](https://www.kimo-instruments.com/sites/default/files/files/UM_Si-RM350_Si-RM450_EN_22-09-2025_2.pdf) [ Simplified manual ](https://www.kimo-instruments.com/sites/default/files/files/QSG_Si-RM350_Si-RM450_22-09-25_11.pdf) A1 / A2L / A2 / A3 refrigerants compatible Durable anti-reflective glass screen Safe and rugged for long data logging High-speed NTC temperature sensors User-friendly troubleshooting with diagnostics New smart assistant app: Sauermann Pilot Product info #### Measure details - Units PSI, kPa, bar, MPa ![shadow](/themes/custom/kimo/images/divider-big.png) #### Measuring ranges - Pressure -1.00 bar ... 60.00 bar - Pressure -14.00 PSI ... 870.00 PSI ![shadow](/themes/custom/kimo/images/divider-big.png) #### Technical details - Parameters Pressure - Displays Graphical display - IP Protection IP 54 - Battery life 300 hours - Standards 2015/863 EU (RoHS 3) 2012/19/UE DEEE 2014/53/UE RED - Bluetooth Yes - Power supply 4 × LR6 or AA 1.5 V batteries. Alternative power supply: USB-C - Connections **Pressure connectors:** Si-RM350: 3x 1/4 MFL male **Temperature connectors:** 2x wired jack (NTC) **Port:** USB-C - Refrigerant database R11, R113, R114, R115, R1150, R116, R12, R123, R124, R125, R1270, R13, R134a, R13b1, R14, R141b, R142b, R143a, R152a, R161, R170, R218, R22, R227, R23, R236ea, R236fa, R245ca, R245fa, R290, R32, R600, R600a, R601, R601a, R718, R744, R744a, R50, R41, R1233zd(E), R1234yf, R1234zeE, R1234zeZ, R401A, R401B, R401C, R402A, R402B, R403A, R403B, R404A, R405A, R406A, R407A, R407B, R407C, R407D, R407E, R407F, R407H, R408A, R409A, R409B, R410A, R410B, R411A, R411B, R412A, R413A, R414A, R414B, R416A, R417A, R417B, R417C, R418A, R419A, R419B, R420A, R421A, R421B, R422A, R422B, R422C, R422D, R422E, R423A, R424A, R425A, R426A, R427A, R428A, R434A, R437A, R438A, R439A, R440A, R441A, R442A, R443A, R444A, R444B, R445A, R446A, R447A, R448A, R449A, R450A, R452A, R452B, R453A, R454A, R454B, R454C, R455A, R456A, R458A, R466A, R469A, R500, R501, R502, R503, R504, R507A, R508A, R508B, R509A, R511A, R513A ![shadow](/themes/custom/kimo/images/divider-big.png) #### Instrument Dimensions - Length 6 13/32 inches 162 mm - Width 2 11/16 inches 68 mm - Height 6 19/32 inches 168 mm - Weight 2 5/32 pounds 0.98 g ![shadow](/themes/custom/kimo/images/divider-big.png) #### Operating temperature - Min Max - -20.00 °C 50.00 °C - -4.00 °F 122.00 °F ![shadow](/themes/custom/kimo/images/divider-big.png) #### Storage temperature - Min Max - -20.00 °C 50.00 °C - -4.00 °F 122.00 °F ![shadow](/themes/custom/kimo/images/divider-big.png) Kit content Several kits: for more information, please refer to data sheet 1 Adjusting certificate Supplied in hard plastic case Probes [ ![wireless_vacuum_probe_manifold](/sites/default/files/styles/small/public/images/IMA_28144_Si-RV4_A2L-A3_Front_1.png.webp?itok=Du8gvvhz) Si-RV4 Wireless vacuum probe](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-rv4-wireless-vacuum-probe) [ ![wireless_pressure_probe_manifold](/sites/default/files/styles/small/public/images/IMA_28144_Si-RP4_A2L-A3_Front_1.png.webp?itok=d1_f6RHv) Si-RP4 Wireless pressure probe](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-rp4-wireless-pressure-probe) [ ![wired_temperature_clamp_manifold](/sites/default/files/styles/small/public/images/IMA_28140_Si-RT2_Right_web_1.png.webp?itok=tPzZeIvc) Si-RT2 Wired temperature clamp](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-rt2-wired-temperature-clamp) [ ![wireless_temperature_clamp_manifold](/sites/default/files/styles/small/public/images/IMA_28142_Si-RT7_Profile_web_1.png.webp?itok=DfuSjKsD) Si-RT7 Wireless temperature clamp](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-rt7-wireless-temperature-clamp) [ ![wired_self_gripping_probe_manifold](/sites/default/files/styles/small/public/images/IMA_28141_Si-RT5_Profile_web_1.png.webp?itok=tCGEAtyu) Si-RT5 Wired temperature probe for large diameter pipe](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-rt5-wired-temperature-probe-large) [ ![hygrometry_temperature_probe_manifold](/sites/default/files/styles/small/public/images/IMA_28145_Si-TH4_Front_web_1.png.webp?itok=nkjxrLPr) Si-TH4 Hygrometry / temperature probe](/en-AU/measuring-instruments/digital-refrigeration-gauges/probes/si-th4-hygrometry-temperature-probe) Downloads #### Documents [ General catalogue instruments](/sites/default/files/files/DOC_EN_26318_INSTRUMENTS-BROCHURE_08-2026_compressed_1.pdf) [ Catalogue distribution](/sites/default/files/files/FR_DISTRIBUTION-BROCHURE_12-2025.pdf) [ Manifolds](/sites/default/files/files/DOC_AU_Manifold-2025_V1-20250521_Web.pdf) Software [ ![Sauermann_pilot_mobile_app_ios_android](/sites/default/files/styles/small/public/images/IMA_MOBILE-APP_%20iPhone%2015_web_0.png.webp?itok=FScfWI2D) Sauermann Pilot](/en-AU/measuring-instruments/digital-refrigeration-gauges/software/sauermann-pilot) Videos [![](/sites/default/files/styles/video_ct_thumbnail/public/video_thumbnails/tZYCSUP6pLU.jpg.webp?itok=MHv6RAZn)](/en-AU/videos/si-rm350-si-rm450-manifolds-range) ## [Si-RM350 & Si-RM450 Manifolds Range](/en-AU/videos/si-rm350-si-rm450-manifolds-range) [![](/sites/default/files/styles/video_ct_thumbnail/public/video_thumbnails/i5rbrz80mkE.jpg.webp?itok=X29GJa5v)](/en-AU/videos/10-reasons-why-youll-love-our-manifolds) ## [10 Reasons Why You'll Love Our Manifolds](/en-AU/videos/10-reasons-why-youll-love-our-manifolds) Compliance Recommended accessories [ ![set_of_two_2_connectors_manifold](/sites/default/files/styles/small/public/images/ACC25586.jpeg.webp?itok=tdXwXITB) Set of two connectors ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/set-two-connectors) [ ![Si-RM6 temperature probe](/sites/default/files/styles/small/public/images/Si-RM6.jpg.webp?itok=gIRv12tL) Si-RM6 ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rm6) [ ![digital_refrigerant_scale_manifold](/sites/default/files/styles/small/public/images/IMA_28153_Si-RS1_A2L-A3_FRONT_01.png.webp?itok=Q6weClc1) Si-RS1 Digital refrigerant scale ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rs1-digital-refrigerant-scale) [ ![two_2_stage_vacuum_pump_manifold_220V_solenoid_valve](/sites/default/files/styles/small/public/images/IMA_28154_Si-RVP1-220V_RIGHT_01.png.webp?itok=F9LkzcdP) Si-RVP1-220V Two-stage vacuum pump ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rvp1-220v-two-stage-vacuum-pump) [ ![two_2_stage_vacuum_pump_manifold_220V_spark_free](/sites/default/files/styles/small/public/images/IMA_28156_Si-RVP3-220V_A2L-A3_RIGHT_01.png.webp?itok=Jxtbhbnj) Si-RVP3-220V Two-stage vacuum pump ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rvp3-220v-two-stage-vacuum-pump) [ ![two_2_stage_vacuum_pump_manifold_110V_manual_valve](/sites/default/files/styles/small/public/images/IMA_28155_Si-RVP1-110V_A2L_RIGHT_01.png.webp?itok=IUeiETSe) Si-RVP1-110V Two-stage vacuum pump ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rvp1-110v-two-stage-vacuum-pump) [ ![two_2_stage_vacuum_pump_manifold_110V_manual_valve](/sites/default/files/styles/small/public/images/IMA_28157_Si-RVP2-110V_A2L_RIGHT_01.png.webp?itok=1C0YHrh9) Si-RVP2-110V Two-stage vacuum pump ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/si-rvp2-110v-two-stage-vacuum-pump) [ ![rugged_carrying_case_manifold](/sites/default/files/styles/small/public/images/IMA_68930_CASE_FRONT_01.png.webp?itok=cjS4TqSy) Hard plastic case ](/en-AU/measuring-instruments/digital-refrigeration-gauges/accessories/hard-plastic-case)