Difference between revisions of "Power supply comparison"
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You should '''not''' use the information here as the sole source for any buying decisions, this is just meant for informational purposes. Please carefully check the vendor websites if you intend to buy any hardware. | You should '''not''' use the information here as the sole source for any buying decisions, this is just meant for informational purposes. Please carefully check the vendor websites if you intend to buy any hardware. | ||
{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable" | {| border="0" style="font-size: smaller; white-space: nowrap;" class="alternategrey sortable sigroktable" | ||
|- | |- | ||
!Device | !Device | ||
Line 49: | Line 49: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| | | 9600/8n1, ASCII | ||
| ? | | ? | ||
| ? | | ? | ||
Line 61: | Line 61: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| | | 9600/8n1, ASCII | ||
| ? | | ? | ||
| ? | | ? | ||
Line 73: | Line 73: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| | | 9600/8n1, ASCII | ||
| ? | | ? | ||
| ? | | ? | ||
Line 113: | Line 113: | ||
| ? | | ? | ||
| $429.- | | $429.- | ||
|- | |||
| [[Conrad DIGI 35 CPU]] | |||
| 0-35V<sup>10</sup> | |||
| 0.01-2.55A<sup>10</sup> | |||
| 1 | |||
| RS232 | |||
| ? | |||
| 8n1, 300-9600, ASCII | |||
| Motorola 68HC05C4 | |||
| ? | |||
| N/A | |||
|- | |||
| [http://www.gwinstek.com/en/product/productdetail.aspx?pid=38&mid=75&id=164 GW Instek PSP-2010] | |||
| 0-20V | |||
| 0-10A | |||
| 1 | |||
| RS232 | |||
| ? | |||
| 2400/8n1, ASCII | |||
| ? | |||
| ? | |||
| ? | |||
|- | |||
| [http://www.gwinstek.com/en/product/productdetail.aspx?pid=38&mid=75&id=164 GW Instek PSP-405] | |||
| 0-40V | |||
| 0-5A | |||
| 1 | |||
| RS232 | |||
| ? | |||
| 2400/8n1, ASCII | |||
| ? | |||
| ? | |||
| ? | |||
|- | |||
| [http://www.gwinstek.com/en/product/productdetail.aspx?pid=38&mid=75&id=164 GW Instek PSP-603] | |||
| 0-60V | |||
| 0-3.5A | |||
| 1 | |||
| RS232 | |||
| ? | |||
| 2400/8n1, ASCII | |||
| ? | |||
| ? | |||
| ? | |||
|- | |||
| [https://www.envox.eu/eez-bb3/ EEZ BB3] | |||
| 1-24V, 0-40V or 0-80V | |||
| 0-5A or 0-10A | |||
| Up to 6 | |||
| USB, Ethernet, UART, MQTT | |||
| STM32F769 | |||
| SCPI | |||
| STM32F769 | |||
| [https://www.youtube.com/c/EEZOpen/playlists 1], [https://github.com/eez-open 2], [https://www.eevblog.com/forum/projects/eez-h25005-a-possible-successor-of-eez-h24005-programmable-power-supply/ 3], [https://discord.gg/dhYMnCB 4] | |||
| €630 | |||
|- | |||
| [https://www.envox.eu/bench-power-supply/introduction/ EEZ H24005] | |||
| 0-40V or 0-80V | |||
| 0-5A or 0-10A | |||
| 2 | |||
| USB, Ethernet | |||
| Arduino Due | |||
| SCPI | |||
| Arduino Due | |||
| [https://github.com/eez-open/psu-hw 1], [https://www.crowdsupply.com/envox/eez-h24005 2] | |||
| N/A | |||
|- | |- | ||
Line 137: | Line 209: | ||
| [http://www.eevblog.com/forum/blog-specific/eevblog-315-korad-ka3005p-reviewfail/ 1], [http://www.youtube.com/watch?v=Fya-4mjV4N4 2] | | [http://www.eevblog.com/forum/blog-specific/eevblog-315-korad-ka3005p-reviewfail/ 1], [http://www.youtube.com/watch?v=Fya-4mjV4N4 2] | ||
| ? | | ? | ||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=93 Manson HCS-3100] | |||
| 1-18V | |||
| 0-10A | |||
| 1 | |||
| USB/serial | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adce346bef.pdf 1], [http://www.manson.com.hk/file/product/f4e93ae957cadd.rar SW] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=93 Manson HCS-3102] | |||
| 1-36V | |||
| 0-5A | |||
| 1 | |||
| USB/serial | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adce346bef.pdf 1], [http://www.manson.com.hk/file/product/f4e93ae957cadd.rar SW] | |||
| [http://www.elv.de/labornetzgeraet-hcs-3102-1-36-v-0-5-a-mit-usb-schnittstelle-programmierbar.html €134.95] | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=93 Manson HCS-3104] | |||
| 1-60V | |||
| 0-2.5A | |||
| 1 | |||
| USB/serial | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adce346bef.pdf 1], [http://www.manson.com.hk/file/product/f4e93ae957cadd.rar SW] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=97 Manson HCS-3150] | |||
| 1-18V | |||
| 0-15A | |||
| 1 | |||
| USB | |||
| ? | |||
| ?, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adc40b7e84.pdf 1] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=15 Manson NDP-4185] | |||
| 0-18V | |||
| 0-5A | |||
| 1 | |||
| RS232, RS485, USB | |||
| ? | |||
| 9600/xxx, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f4c04c96b2e1bc.pdf 1], [http://www.manson.com.hk/file/product/f4c56335d6d680.rar SW] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=15 Manson NDP-4303] | |||
| 0-30V | |||
| 0-3A | |||
| 1 | |||
| RS232, RS485, USB | |||
| ? | |||
| 9600/xxx, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f4c04c96b2e1bc.pdf 1], [http://www.manson.com.hk/file/product/f4c56335d6d680.rar SW] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=15 Manson NDP-4601] | |||
| 0-60V | |||
| 0-1.5A | |||
| 1 | |||
| RS232, RS485, USB | |||
| ? | |||
| 9600/xxx, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f4c04c96b2e1bc.pdf 1], [http://www.manson.com.hk/file/product/f4c56335d6d680.rar SW] | |||
| ? | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=92 Manson HCS-3200] | |||
| 1-18V | |||
| 0-20A | |||
| 1 | |||
| USB/serial | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adcad2157c.pdf 1] | |||
| ? | |||
|- | |||
| [[Manson HCS-3202]] | |||
| 1-36V | |||
| 0-10A | |||
| 1 | |||
| USB/serial | |||
| SiLabs CP2102 | |||
| 9600/8n1, ASCII | |||
| Atmel ATmega64A | |||
| [http://www.manson.com.hk/file/product/f505adcad2157c.pdf 1] | |||
| [http://www.elv.de/labornetzgeraet-hcs-3202-1-36-v-0-10-a-mit-usb-schnittstelle-programmierbar.html €138.-] | |||
|- | |||
| [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=1&id=92 Manson HCS-3204] | |||
| 1-60V | |||
| 0-5A | |||
| 1 | |||
| USB/serial | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| [http://www.manson.com.hk/file/product/f505adcad2157c.pdf 1] | |||
| [http://www.elv.de/labornetzgeraet-hcs-3204-1-60-v-0-5-a-mit-usb-schnittstelle-programmierbar.html €169.95] | |||
|- | |- | ||
Line 145: | Line 337: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| 9600/8n1, ASCII | |||
| ? | | ? | ||
| | | [http://www.manson.com.hk/file/product/f4c0dad2b7a7d2.pdf 1] | ||
| [http://www.reichelt.de/Labornetzgeraete/SDP-2210/3/index.html?;ACTION=3;LA=2;ARTICLE=110547;GROUPID=4952;artnr=SDP+2210 €199.-] | |||
| [http://www.reichelt.de/Labornetzgeraete/SDP-2210/3/index.html?;ACTION=3;LA=2;ARTICLE=110547;GROUPID=4952;artnr=SDP+2210 €199. | |||
|- | |- | ||
Line 157: | Line 349: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| 9600/8n1, ASCII | |||
| ? | | ? | ||
| | | [http://www.manson.com.hk/file/product/f4c0dad2b7a7d2.pdf 1] | ||
| [http://www.reichelt.de/Labornetzgeraete/SDP-2405/3/index.html?;ACTION=3;LA=2;ARTICLE=110553;GROUPID=4952;artnr=SDP+2405 €199.-] | |||
| [http://www.reichelt.de/Labornetzgeraete/SDP-2405/3/index.html?;ACTION=3;LA=2;ARTICLE=110553;GROUPID=4952;artnr=SDP+2405 €199. | |||
|- | |- | ||
Line 169: | Line 361: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| 9600/8n1, ASCII | |||
| ? | | ? | ||
| | | [http://www.manson.com.hk/file/product/f4c0dad2b7a7d2.pdf 1] | ||
| ? | | ? | ||
Line 193: | Line 385: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| | | 9600/8n1, ASCII | ||
| ? | | ? | ||
| ? | | ? | ||
Line 205: | Line 397: | ||
| RS232, RS485 | | RS232, RS485 | ||
| ? | | ? | ||
| 9600/8n1, ASCII | |||
| ? | |||
| ? | |||
| [http://www.reichelt.de/Labornetzgeraete/PEAKTECH-1890/3/index.html?;ACTION=3;LA=2;ARTICLE=48179;GROUPID=4952;artnr=PEAKTECH+1890 €259.55] | |||
|- | |||
| [https://de.aliexpress.com/item/4000282551930.html Riden RD6006] | |||
| 0-60V | |||
| 0-6A | |||
| 1 | |||
| USB/Serial, WiFi | |||
| ? | |||
| 115200/8n1, Modbus | |||
| ? | | ? | ||
| [https://rdtech.de.aliexpress.com/store/923042 1] | |||
| $70.- | |||
|- | |||
| [http://www.rigolna.com/products/dc-power-supplies/dp1000a/dp1116a/ Rigol DP1116A] | |||
| 0-16V or 0-32V | |||
| 0-10A or 0-5A | |||
| 1 | |||
| GPIB, LXI-C(Ethernet), USB | |||
| ? | | ? | ||
| SCPI | |||
| ? | |||
| [http://www.rigol.com/prodserv/DP1116A/document/?act=view&itemid=242 1] | |||
| $849.- | |||
|- | |||
| [http://www.rigolna.com/products/dc-power-supplies/dp1000a/dp1308a/ Rigol DP1308A] | |||
| 1x 0-6V, 2x 0-25V | |||
| 1x 0-5A, 2x 0-1A | |||
| 3 | |||
| GPIB, LXI-C(Ethernet), USB | |||
| ? | |||
| SCPI | |||
| ? | |||
| [http://www.rigol.com/prodserv/DP1116A/document/?act=view&itemid=242 1] | |||
| $849.- | |||
|- | |||
| [https://www.rohde-schwarz.com/product/hmp4000 HMP4000] | |||
| 3x/4x 0-32V | |||
| 3x/4x 0-10A | |||
| 3/4 | |||
| USB, LAN, GPIB | |||
| ? | |||
| SCPI | |||
| ? | |||
| [[Rohde&Schwarz HMP 4000 series]] | |||
| ? | | ? | ||
|- | |- | ||
Line 245: | Line 485: | ||
| [http://www.eevblog.com/forum/product-reviews-photos-and-discussion/vantek-dps-3305p-32v5a160w-programmable-dc-power-supply/ 1] | | [http://www.eevblog.com/forum/product-reviews-photos-and-discussion/vantek-dps-3305p-32v5a160w-programmable-dc-power-supply/ 1] | ||
| ? | | ? | ||
|- | |||
| [[Velleman PS3005D]] | |||
| 0-30V | |||
| 0-5A | |||
| 1 | |||
| RS232, USB | |||
| ? | |||
| 9600/8n1, ASCII | |||
| ? | |||
| ? | |||
| [http://www.amazon.de/gp/product/B00B3K5TIY/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1 €119.95] | |||
|- | |- | ||
Line 267: | Line 519: | ||
<sup>5</sup> '''NOTE''': This power supply seems to generate a [https://www.youtube.com/watch?v=AZhkZf_GnRM 25V spike (for about 1 second) upon every powerup], which might kill the attached device/electronics (if any). Be careful.<br/> | <sup>5</sup> '''NOTE''': This power supply seems to generate a [https://www.youtube.com/watch?v=AZhkZf_GnRM 25V spike (for about 1 second) upon every powerup], which might kill the attached device/electronics (if any). Be careful.<br/> | ||
<sup>6</sup> Shenzhen MASTECH HY3020MR = HYelec HY3020MR<br /> | <sup>6</sup> Shenzhen MASTECH HY3020MR = HYelec HY3020MR<br /> | ||
<sup>7</sup>[http://www.bkprecision.com/products/power-supplies/1696-programmable-dc-power-supply-1-20vdc-0-999a.html BK Precision 1696] = [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=22 Manson SDP-2210] = [http://www.peaktech.de/produktdetails/kategorie/programmierbare-digitale-labornetzgeraete/produkt/p-1890.html PeakTech 1890]<br /> | |||
<sup>8</sup>[http://www.bkprecision.com/products/power-supplies/1697-programmable-dc-power-supply-1-40vdc-0-5a.html BK Precision 1697] = [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=22 Manson SDP-2405] = [http://www.peaktech.de/produktdetails/kategorie/programmierbare-digitale-labornetzgeraete/produkt/p-1885.html PeakTech 1885]<br /> | |||
<sup>9</sup>[http://www.bkprecision.com/products/power-supplies/1698-programmable-dc-power-supply-1-60vdc-33a.html BK Precision 1698] = [http://www.manson.com.hk/en/dcpowersupplies_detail.php?m=3&id=22 Manson SDP-2603]<br /> | |||
<sup>10</sup>Print ''30V/2.5A'' on front panel is wrong!<br /> | |||
</small> | </small> | ||
[[Category:Device comparison]] | |||
[[Category:Power supply]] |
Latest revision as of 08:37, 24 October 2021
This is an alphabetically ordered table of various (programmable) power supplies with PC connectivity via USB, RS232, GPIB, and so on. We do not list devices without PC connectivity, as those are not really useful for sigrok.
This page lists commercial and non-commercial devices with a short overview of their capabilities. We list all kinds of devices here, not only those supported by sigrok.
You should not use the information here as the sole source for any buying decisions, this is just meant for informational purposes. Please carefully check the vendor websites if you intend to buy any hardware.
Device | Voltage | Current | Channels | PC interface | PC interface chip | PC protocol | Architecture/chip | Resources | Price |
---|---|---|---|---|---|---|---|---|---|
Atten PPS3203T-3S2 | 2x 0-32V, 1x 0-6V | 3x 0-3A | 3 | RS232, USB4 | ? | ? | ? | 1 | €430.- |
Atten PPS3205T-3S3 | 2x 0-32V, 1x 0-6V | 2x 0-5A, 1x 0-3A | 3 | RS232, USB4 | ? | ? | ? | ? | €499.- |
BK Precision 16967 | 1-20V | 0-10A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | ? | ? |
BK Precision 16978 | 1-40V | 0-5A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | ? | ? |
BK Precision 16989 | 1-60V | 0-3.3A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | ? | ? |
Caltek DPS 3305P1 | 0-32V | 0-5A | 1 | USB | ? | ? | Atmel ATmega8 | 1, 2 | ? |
Circuit Specialists CSIPPS33T2 | 2x 0-32V, 1x 0-6V | 3x 0-3A | 3 | RS232, USB | ? | ? | ? | ? | $299.- |
Circuit Specialists CSIPPS55T3 | 2x 0-32V, 1x 0-6V | 2x 0-5A, 1x 0-3A | 3 | RS232, USB | ? | ? | ? | ? | $429.- |
Conrad DIGI 35 CPU | 0-35V10 | 0.01-2.55A10 | 1 | RS232 | ? | 8n1, 300-9600, ASCII | Motorola 68HC05C4 | ? | N/A |
GW Instek PSP-2010 | 0-20V | 0-10A | 1 | RS232 | ? | 2400/8n1, ASCII | ? | ? | ? |
GW Instek PSP-405 | 0-40V | 0-5A | 1 | RS232 | ? | 2400/8n1, ASCII | ? | ? | ? |
GW Instek PSP-603 | 0-60V | 0-3.5A | 1 | RS232 | ? | 2400/8n1, ASCII | ? | ? | ? |
EEZ BB3 | 1-24V, 0-40V or 0-80V | 0-5A or 0-10A | Up to 6 | USB, Ethernet, UART, MQTT | STM32F769 | SCPI | STM32F769 | 1, 2, 3, 4 | €630 |
EEZ H24005 | 0-40V or 0-80V | 0-5A or 0-10A | 2 | USB, Ethernet | Arduino Due | SCPI | Arduino Due | 1, 2 | N/A |
HYelec HY3020MR6 | 0-30V | 0-20A | 1 | RS232 | ? | ? | ? | 1, 2, 3 | $235.- |
Korad KA3005P | 0-30V | 0-5A | 1 | RS232, USB | ? | ? | ? | 1, 2 | ? |
Manson HCS-3100 | 1-18V | 0-10A | 1 | USB/serial | ? | 9600/8n1, ASCII | ? | 1, SW | ? |
Manson HCS-3102 | 1-36V | 0-5A | 1 | USB/serial | ? | 9600/8n1, ASCII | ? | 1, SW | €134.95 |
Manson HCS-3104 | 1-60V | 0-2.5A | 1 | USB/serial | ? | 9600/8n1, ASCII | ? | 1, SW | ? |
Manson HCS-3150 | 1-18V | 0-15A | 1 | USB | ? | ?, ASCII | ? | 1 | ? |
Manson NDP-4185 | 0-18V | 0-5A | 1 | RS232, RS485, USB | ? | 9600/xxx, ASCII | ? | 1, SW | ? |
Manson NDP-4303 | 0-30V | 0-3A | 1 | RS232, RS485, USB | ? | 9600/xxx, ASCII | ? | 1, SW | ? |
Manson NDP-4601 | 0-60V | 0-1.5A | 1 | RS232, RS485, USB | ? | 9600/xxx, ASCII | ? | 1, SW | ? |
Manson HCS-3200 | 1-18V | 0-20A | 1 | USB/serial | ? | 9600/8n1, ASCII | ? | 1 | ? |
Manson HCS-3202 | 1-36V | 0-10A | 1 | USB/serial | SiLabs CP2102 | 9600/8n1, ASCII | Atmel ATmega64A | 1 | €138.- |
Manson HCS-3204 | 1-60V | 0-5A | 1 | USB/serial | ? | 9600/8n1, ASCII | ? | 1 | €169.95 |
Manson SDP-22107 | 1-20V | 0-10A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | 1 | €199.- |
Manson SDP-24058 | 1-40V | 0-5A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | 1 | €199.- |
Manson SDP-26039 | 1-60V | 0-3A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | 1 | ? |
Protek P60351 | 0-32V | 0-5A | 1 | USB | ? | ? | ? | 1 | $219.90 |
PeakTech 18858 | 1-40V | 0-5A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | ? | €266.95 |
PeakTech 18907 | 1-20V | 0-10A | 1 | RS232, RS485 | ? | 9600/8n1, ASCII | ? | ? | €259.55 |
Riden RD6006 | 0-60V | 0-6A | 1 | USB/Serial, WiFi | ? | 115200/8n1, Modbus | ? | 1 | $70.- |
Rigol DP1116A | 0-16V or 0-32V | 0-10A or 0-5A | 1 | GPIB, LXI-C(Ethernet), USB | ? | SCPI | ? | 1 | $849.- |
Rigol DP1308A | 1x 0-6V, 2x 0-25V | 1x 0-5A, 2x 0-1A | 3 | GPIB, LXI-C(Ethernet), USB | ? | SCPI | ? | 1 | $849.- |
HMP4000 | 3x/4x 0-32V | 3x/4x 0-10A | 3/4 | USB, LAN, GPIB | ? | SCPI | ? | Rohde&Schwarz HMP 4000 series | ? |
Quakko HY3005DP1, 5 | 0-32V | 0-5A | 1 | USB | ? | ? | ? | 1, 2 | $199.95 |
Shenzhen MASTECH HY3020MR6 | 0-30V | 0-20A | 1 | RS232 | ? | ? | ? | 1, 2, 3, 4 | $269.95 |
Vantek DPS 3305P1 | 0-32V | 0-5A | 1 | USB | ? | ? | Atmel ATmega8 | 1 | ? |
Velleman PS3005D | 0-30V | 0-5A | 1 | RS232, USB | ? | 9600/8n1, ASCII | ? | ? | €119.95 |
YoRi DPS 3305P1 | 0-32V | 0-5A | 1 | USB | ? | ? | Atmel ATmega8 | 1, 2, 3, 4, 5, 6 | ? |
1 Vantek DPS 3305P = Caltek DPS 3305P = YoRi DPS 3305P = Quakko HY3005DP = Protek P6035
2 Atten PPS3203T-3S = Circuit Specialists CSIPPS33T
3 Atten PPS3205T-3S = Circuit Specialists CSIPPS55T
4 The website also says "Options interface: GPIB (IEEE 488.2)", but there's no GPIB connector in the photos and nothing is mentioned in the manuals, apparently.
5 NOTE: This power supply seems to generate a 25V spike (for about 1 second) upon every powerup, which might kill the attached device/electronics (if any). Be careful.
6 Shenzhen MASTECH HY3020MR = HYelec HY3020MR
7BK Precision 1696 = Manson SDP-2210 = PeakTech 1890
8BK Precision 1697 = Manson SDP-2405 = PeakTech 1885
9BK Precision 1698 = Manson SDP-2603
10Print 30V/2.5A on front panel is wrong!